Marc Marquez sets his fastest lap time of the day to slot into second place, 0.126s behind brother Alex. But is he on a GP24 or a GP25? Hopefully, we'll find out later, but the factory Ducati riders might well be vague about the exact mix of parts they are using.
If they do step back to the GP24, it would echo the move made at the start of 2022, when then factory Ducati riders Francesco Bagnaia and Jack Miller made a last-minute switch from the GP22 to a GP21-style engine.
The GP21 might not have won the championship but is still considered by many to be Ducati's best all-round MotoGP bike, a status that could be challenged by the GP24.