Originally Posted by
NY-FLA
The 10 minute A-D Atl. transit time you quote is the absolute best achievable, and does not include some activities inherent in making a connection from RJ to mainline, particularly; waiting for roll-aboards, moving from tarmac to terminal, imperfect train timing, 10 minute prior to departure requirements, etc. For these reasons (and if you want to get technical, statistical variations in arrival and departure times), transit time is quite independent of connection time.
No, of course, the 10 minute period doesn't include those things. But that allowed 15+ minutes (not counting the 10 minute prior to departure requirements, which we all know is sometimes enforced but often isn't) for all of those other things. I don't think it is the "absolute best achievable".