Over the Miami Grand Prix weekend Horner shot back at suggestions from Mercedes and McLaren that Red Bull would be weakened by designer Adrian Newey's departure, and in particular McLaren CEO Zak Brown's belief that Newey "won't be the last domino" to fall at the team.
Horner claimed his newly built-up engine division Red Bull Powertrains had captured as many as 220 people from Mercedes High Performance Powertrains in Brixworth, and suggested that his squad had also attracted a significant number of people from Brown's team.
