Very strong but he was going pull for pull on the flats with 2 far superior sprinters for way too long, I think he realised a few K out and decided to throw in some attacks, but you're never dropping them on the flat. Change of approach for De Ronde needed surely, ride the climbs full gas then stop dead if they're still with you at the end maybe, allow a group behind to start coming back and see who blinks first, although I'm not sure his pride would allow it. There is no path to victory in bringing either Van Aert or VDP with him to the line, unfortunately by the time he realised it was too late in the day.