It's quite surprising to see Vandoorne getting the best of Alonso in qualifying for only the second time this season. Then again, I think Alo only left the pits for the last six minutes - hardly the way to go on a wet session. I doubt he cares a lot since he'll be starting last anyway, though.
Edit: he's saying that they used old tyres and the engine in a very conservative setting just for the hell of it. Although he also said that he had engine problems at Belgium, so who knows... :p