A couple of tales..
A year or so back, a roadie friend of mine was visiting Edinburgh and we headed down to Glentress with his seldom-used MTB. I thought we’d try the Blue route first, so set him off in front of me. Well, that was it. He was off up the hill like a shot and I didn’t see him until we were on the last section of the Blue descent. We had a coffee and decided to do the Red. Once again, he left me trailing uphill and it was on the section after Spooky Woods that I caught him up. The thing was, he’d never even considered stopping at any point, the way that most MTBers do.
Second… I was doing the Isle of Man End2End last week and was trying to chat to my fellow riders as we rode/walked/struggled along together. Barely a word from any of them. I’m more used to Sportives where chatting as riding along is normal, so I found this a bit strange.
Summary – It all depends. Roadies probably have more of a chance to chat as they ride. Mountain bikers are more often in single file, so any chat comes before/after each section of the ride. Personally, I enjoy them both in company and alone at various times. Some folk do seem to struggle with the concept of doing multi-day rides solo though….