Connor Chapman told a jury it was his "personal opinion" that more than one person loitered outside the Lighthouse Pub before Elle Edwards was shot dead.
The 23-year-old is giving evidence at Liverpool Crown Court where he is standing trial accused of firing 12 shots at a group of people outside the pub, in Wallasey Village, shortly before midnight on Christmas Eve last year.
Elle, 26, was struck twice in the head by bullets from a Skorpion sub-machine gun, while the gunman's "intended targets" - Kieron Salkeld and Jake Duffy - were seriously wounded. Three other men described as "innocent bystanders" were also injured.