If Red Bull can show good race pace and tyre degradation even in these conditions, that would be very promising to the rest of the season.
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He has 15 seconds in front of Leclerc after both stopped. So there is margin to 3 stop.
I don't think you can find heaps of time in Spain. The corners stress the tires enough aleady.
I think the first 5 laps were enough to put any idea of McLaren closeness to rest. P3 should still be doable.