I was playing the Sam Cooke song when I thought it was very similar to the Beatles and Oh Darling. Here are both together in the piano style of Fats Domino.
you make the bridge from oh darling fit bring it on home so perfectly that it could have been the bridge for the sam cooke song. and when you came out of the bridge into the chorus of oh darlin, it may well have been the final vrse for bring it on home. so seamless that it is much more than a mash up.