I've done research both on this site and elsewhere on the web, so I understand the connection process but am looking for anecdotal data points on this question:
I'm planning a connection wholly within Terminal 2, Dublin-Heathrow-Calgary, for next summer. The first flight is a short hop from Dublin on Aer Lingus, so hopefully can't get too screwed up. Then a 2-hour layover to connect to my flight to Canada. This helpful Heathrow Personal Connection Planner says it's well within limits. They say that the 5 steps necessary for the connection, including re-clearing security, should take 60 minutes, half the time I will have. The link is to a very helpful page on the Heathrow site, though my data will probably have expired when you click on it.
I have not been to or through London since I was a teenager, mumble-mumble years ago. The flight will be on one Air Canada ticket, so I'm willing to give it a shot and let AC rebook me if it fails, as long as it's the same non-stop the next day. I don't like intra-Canada hops, it's just so much more time and effort to come through Montreal or Toronto or Vancouver rather than straight home. Plus I'm a sucker for the comfy 787s and don't want to go home on Rouge.
Can anyone offer experiences with 2-hour connections at Terminal 2? Any experiences with AC's service if a connection fails - do I get to pick my preferred rebooked flight or do I have to take what they give me? I will have mid-level airline status next year, so I'm hoping they will listen. Thanks for your insight.