Yet another question. So thankful for all your help!
I thought I’d found a great flight until I looked at on-time performance for the Air Canada leg from Toronto to Zurich (AC880). The “average delay” is reported on Flightaware as more than an hour! I can see in the flight history that there will be a reasonably good chance of missing my onward flight on Swiss (LX2156) even with a 1hr 45min layover. So I went to the Swiss webpage to see what later flights they could move me to. Plan B. The next one is a nonstop but operated by Edelweiss Air (flight LX8246) Will that be a problem, not being operated by Swiss, though listed on the Swiss webpage? I think it’s interesting, too, that both flight numbers begin with LX, is it meaningful?
The next 2 flights are operated by Swiss but have have another layover and are more than twice as long, I really don’t want to get stuck on one of those after already being in transit for 17 hours by this time!