45min counts. I think most folks say 45 to 70min? In my book 45min would count.
I need to try again soon in Zwift. Outdoors local to me there aren't many good options to hammer that long nonstop without a drive out of town. Then if so, I'm going for a 40k on the TT bike instead of a road ride. So subtract XX watts at that point.
I'm pretty sure now I'm up on power a bit. During some 2x15 on the TT bike other day, my avg speed out/back on the flatter portion that still isn't flat was faster than my 10mi PR speed. Despite no TT helmet and such. Meter battery died during warmup, so just hammered and watched HR and went by feel.
I need to fix my meter issue on the road bike. It reads a lot lower than my Quarq or Kickr. Left only Stages junk. Probably get a gxp Quarq dfour and put my dura ace rings on it and get the carbon Quarq crank arms for it.