It's not like he rides a lot of ITT's, but the ones he did ride, he has always done remarkably well. He won a short ITT 3 years ago when he was still a kid, beating Tony Martin. He was 6th in a Belgian Championship ITT over 40km, when he was 22. He was 2nd last year in Denmark, beating talented ITT riders like Bjerg (who attacked the Hour Record the same month) quite comfortably. So, it's not a surprise that he could do a very strong TT. But i don't think many people expected him to ridicule the rest of the peloton like this.
There's nothing shocking in Fuglsangs last year Swiss Tour tt. You can check out his level already from 2011 Worlds tt and quality of participants. And his ability to go out hard long small escape groups. It's possible to ride tt when support role, not top form, not recovered aso that he has done alot. But when top form, his tt ability is on level that, say Quintana, Bardet, Pinot, have looong hard road to reach.
Chapeau Van Aert! Ok, who picked him to win the TT? Anyone?
Well, we had the ITT and things are bit clearer - Froome's in hospital, Tommy D got beat by TJ in a TT so he needs to get his knee sorted out, A. Yates gets the GC lead but gets beaten in the TT by TJ, Kruijswijk and Buchmann so he still has TT problems. Ala & Fuglsang looking promising for TdF's ITT.
Kruijswijk/Van Aert and Buchmann must be the happiest after today with regards to the TdF. Interesting that take Ineos & Tommy D out of a TT and anything can happen - after Carapaz's Giro win and now today's events, it seems a new young group is taking over.