That's part of the problem. In my view you should never risk a shuttle-bus connection of 30 minutes or less. I've missed a Comair flight because of shuttle-bus congestion at the stop, and driver wouldn't let us disembark until he was able to pull up another ten feet ( ) ... during that three minutes of waiting my RJ left without me. I have also been the victim of a late-arriving Comair flight, then a poky shuttlebus, which caused me to be three minutes late for my mainline DL connection, and there isn't another one going out today (or for eight hours, etc.)... so for me the stress of CVG isn't worth it.