Sleep Training in Same Room?

We successfully sleep trained baby B last week but delayed baby A due some discomfort. Would like to begin with baby A soon. Ultimate goal is for them to be in same room. Would you sleep train the second one in a separate room for first few nights or just go right to crib in shared nursery? The successfully sleep trained B is a bit more of a light sleeper. Not sure if it’s best to get A acclimated outside of shared room and then transition or just rip the bandaid off but maybe end up having some more unpleasant nights for B with the new roommate and anticipated crying of A. They are 6 months adjusted. Any advice appreciated!