I'm not good at hills compared to rest of you, especially anything that requires a few gear .changes, so I had to work hard to get over the lumpy bits. I lost the faster groups you were in and had to tag onto others once the terrain leveled off. I did catch upto Bob and Martin so was comfortable with the pace until a long last drag before the fens appeared, lost Bobs wheel.
In fact I think Bob had overcooked himself and was all on his own when I caught him. He tagged onto me and the group I was with. Martin paced himself much better coming back to me and Bob a little later. It was the lumps that broke my chance to stay with Bob. Martin and I rode together upto the 2nd food stop, he probably didn't know I was only a bike or so behind him. We were in a biggish group and if I had stayed in the pack instead of going for water, my time I'm sure would of been better. Bad decisions!
The climbs in Zwift where you know it's only for a period of time I can go deeper to try and stay with riders, still I do lose time in Zwift on the hills against Bob too. I'm just near enough usually to catch him later-mostly. The Tour of Watopia was a great example of multi type courses where I would gain time on Bob on flatter short hills and he would take back time on longer sustained climbs.
It's the usual, lose some more weight, keep my power.
I would say my forte has always been mid distance short rolling terrain. Distance, hills and weight not the best combination.
Plus gotta pick my targets carefully, no point to try and out race the likes of Paul and you, just a bit too quick
Gosh long post