Originally Posted by
Goldorak
Normally no, but several posters have reported here being able to do it. However, with 3 hrs of connection time and DL boarding ops starting ridiculously early, I would certainly not bother hopping on a different lounge than the one you are normally entitled to. And bad luck for you

, DL is using K and M concourses but never the L one.
Yeah, I knew DL doesn't use L. Flightaware shows DL119 consistently departing from K. I'll gauge my stamina in trying on the day of travel. Thanks.