I had it done for me last year, although more like 5 minutes, than 5 hours! In fact, the nice man at the counter said he would phone ahead to have them hold the door open and in return would I please '"run." I won't say I out and out ran but I did a pretty decent jog considering the size of my carry-on.

This was weather-related, my plane and I think several others were cancelled because of tornadoes in Memphis, so the counter agent wanted to get me on another plane as soon as possible, because he could see that a lot of other pax needing to be re-booked would be arriving soon.