Are they letting lapped cars to unlap themselves under yellow???
As far as the 963, yeah identical cars. Both Penske but separate teams, separate garages. But obviously, there's close communication. WEC qualified in the evening and IMSA qualified the next day in daylight but temps were about the same. And Cadillac WEC vs IMSA teams were fairly consistent in qualifying. It's a mystery, although the 963s had pace at night for some reason. Oh well, Porsche will figure things out before Le Mans.