Everyone is operating on the assumption that DL has said, "Sure, CO, you just set up a couple of podiums and computers right over there." Now we do not know what the impediment is here, do we? Maybe the DL lease with Massport does not allow a sublet, maybe DL does not want to co-brand their CRC... we simply don't have enough info here!
If part of the main terminal A CRC becomes a PC, will I, as a DL passenger, be allowed to sneak over to your side of the room and borrow some of the snacks that I have found in the current BOS PC?
One point I will continue to make is that I do not see how DL will allow hundreds of daily CO PC members to be refreshed at DL's expense if there is no side arrangement between the two carriers. Simple lounge reciprocity doesn't really cut it when you are talking about one of the largest CO stations (non-hub) in the country.