Originally Posted by WineCountryUA

Single ticket? or separate tickets?

The MCT for ID DEN is 1 hour. And both flights are A but still this will tight with the need to claim bags and clear customs and immigration.

Originally Posted by mpw81

Iceland Air will arrive near the middle of A, you will be funneled up to the top level of the bridge from A to main terminal for customs and immigration. I regularly make it from the door of the plane to the curb in 15 mins or less with carryon bag. The real slow down here will be baggage claim.

After baggage claim and re-check you'll go into main terminal just like everyone originating in DEN. Then upstairs to West security for Pre-check which has been pretty quick iny experiences lately, but then you'll have to train back to A or B, which isn't really a significant difference unless you are at the farthest reaches of B.

Very doable, but you'll be moving most of the connection, is my guess. I wouldn't do this if on separate tickets.