Originally Posted by
JimInOhio
I would check with Delta about having them link your two reservations. Sometime they can and sometimes they can't. Often if they successfully link them, you can through-check your bags from origin to final destination. Worth asking about, IMHO.
Doesn't require linking of reservations just an interline agreement. You could check whether they can be tagged through.
Also the OP should check whether the DL flight is actually going to arrive into T4 as that is where the majority of their flights go.