I was out for a (solo) road ride once, ended up tagging on with a bunch of other riders, 10 or so. Road tilted upwards and I went ahead. Broke my chain at the top, and was stopped at the side of the road when they came past. I did have a chain tool, and was fine fixing it. But despite having been exchanging pleasantries with these guys for 5 miles or so not one of them said anything as they rode past!
Conversely I once happened upon two women fixing a puncture (again on the road) offered help, as did a couple of the other guys, and were met with a very surly “we’re fine”, so carried on. Did a 10 mile or so loop only to find them still there, they didn’t say anything the second time, and we didn’t offer!