It might surprise people to find out that, in his 25 matches in charge of Wales, Wayne Pivac has named 17 different back-row combinations.
Then again, given how Wales have struggled for balance in this department - and the sheer number of injuries Pivac has contended with - it might not be that much of a surprise.
Perhaps the biggest surprise is that, in his last 25 matches in charge of Wales, Warren Gatland also fielded 17 different triumvirates in the back-row.
The number of players each coach used has been largely the same. Gatland's 17 different combinations was comprised from 10 players, while Pivac's 17 was drawn from 14.
The age-range of the two groups is largely similar.
Read next: The latest Six Nations headlines are here.
By the start of the 2019 World Cup, where Gatland was building to, the average age of those 10 players was just over 27 years old.
Right now, the average age of the 14 players Pivac has used is 28 years old.
The fact is that it's been a while since Wales have had a relatively settled back-row combination - effectively that ended when Sam Warburton hung his boots up in 2018.
Across the two coaches, it's been clear that, when everyone is fit, the ideal back-row combination has been Josh Navidi, Justin Tipuric and Taulupe Faletau.
Understandably, that was a useful - if rarely seen - combination for Gatland. For Pivac, it's become almost essential to how his coaching ticket want to play the game.
Few in the current game get close to the clearout efficiency of Navidi, vital to transforming Wales' turgid attack into something potent, while the work of Tipuric and Faletau - both world-class players in their own right - in tandem is another means with which to unlock international defences.
That's why the return of Faletau - after seven months of injury hell - was so welcome last week.
Aaron Wainwright is growing into the role of a dynamic No. 8, but Faletau will go down as probably the best to turn out in the position for Wales.
And the news that Navidi is likely to get called up next week as he makes his return to action for Cardiff this weekend means Pivac will have two-thirds of his best back-row available.
The wisdom in rushing Navidi back - particularly for games that are essentially dead rubbers - is one up for debate, but if Wales fancy getting the better of France in Cardiff, then a recall for Navidi is the way forward.
That could be seen as harsh on Ross Moriarty, who'd performed decently in the blindside role - even if the penalty count against him has been a little too high at times.
The other blindside options who have featured under Pivac - Dan Lydiate, Shane Lewis-Hughes and Josh Turnbull - are not currently in the squad for different reasons.
So the possibility of Navidi and Faletau starting against France is, as much of an affront as it might be to Cardiff fans who have barely seen Navidi this season, a real one.
Of course, there's no chance of Justin Tipuric returning anytime soon to complete the trio - with his season a write-off.
As well as missing a world-class openside and the jackal threat he possesses, they also lose a playmaking option which, to date, Wales haven't been able to replace.
During the three matches Pivac has got Navidi, Tipuric and Faletau on the field together, the Ospreys flanker has helped facilitate some of Wales' best attacking performances in the Pivac era with his range of tip-on passes and, more notably, his use as a second-receiver to spread the ball wide.
Quite simply, none of the other options Wales have tried can replicate that.
So the question is where Wales look to go with their back-row in the absence of a generational talent like Tipuric? After all, Wales have always tended to go into World Cups missing at least one of their world-class players.
Pivac has looked to bring in young talent in order to wean Wales off the reliance on Gatland's stalwarts.
In the openside department, James Botham, 24, isn't currently in the squad but has impressed in a red jersey when called upon. Then there's two even newer faces who have both yet to celebrate their 23rd birthdays, Jac Morgan and Taine Basham.
At the moment, it's the latter who has hold of the jersey - with his strong, explosive carrying catching the eye every time he takes to the field.
However, there is a sense that, while he thrives on an individual basis - particularly in lost causes - the team look better when there's a more accomplished breakdown option in the back-row.
Wales looked more threatening against England once Jac Morgan was on the field to disrupt English ruck speed, while he also provided a jackal and clearout option against Scotland from the start.
A little longer in the tooth, albeit only at the age of 28, Ellis Jenkins has dropped down the pecking order somewhat - paying the price for being the odd man out in a unbalanced back-row in Dublin.
Whereas Basham's all-action style of play was suited to taking the fight to a dominant side, that doesn't necessarily mean Jenkins - who could do little at the breakdown with no one winning collisions around him - deserves to be totally dispensed with on the back of the Ireland game.
Correlation doesn't equal causation and all that.
If you look at the jackal threat Jenkins poses, as well as the all-round skills he possesses - with his link work in wider channels underrated - he could be the closest thing Wales have to matching Tipuric.
Obviously, it's still a different back-row to one that would have Tipuric, but combining Navidi and Faletau with either Jenkins or Morgan could push Wales a little closer to the fast-pace game they want to play.
Despite being the current first-choice, it could well be that the return of Navidi and Faletau could suit Jenkins or Morgan more than it suits Basham.
Much has been made about where Pivac's Wales are right now. A back-row better suited to a faster style of play could well go towards building upon the brief glimpses of attacking fluency we saw against England.
That's why you shouldn't be surprised if you see an 18th different combination from Pivac against France.
To get the latest rugby news and analysis, sign up for our Welsh rugby newsletter.
