I am constantly amazed at some of the connections people book. One run around the holding pattern is worth about 7-8 minutes. ATC's favourite phrase is "reduce to minimum speed".
We do not wait. If there is no luggage in the hold we'll go immediately.
When I was commuting, I never used less than 3 hours. If I couldn't get that, I went the day before. Not quite the same scenario, I know, but it's too easy to lose time, and impossible to get any back.
How does Joe Public know that though?
The airline should not be putting the pax in the situation where the chance of missing the connection is so high.
It's easy for us all to sit here and say so having had the experience.
Surely in 2017 a customer can expect just a little more care from the airlines?