A male student has three girls come to his place after school, after making the girls believe he will spend the weekend doing their homework.
While everyone is taking out books, he is getting his book ready, a book hypnotic regression, and the fun begins.
He plays big daddy, giving them toys to play with, and while two of them are playing, he fucks one.
The following day, all three adult baby girls are now also wearing diapers, and while preparing them for a day of fun, he also does a diaper change on one of the girls, and plays with her pussy while the other two watch.
This continues for a few days and nights, as he takes enjoys sex with all three adult baby girls as he wishes, when he wishes, ending finally with all four of them in an adult baby and diaper orgy, with him and the three diaper girls.
I would say that all ABs are also DLs. To me, it seems that the diaper is very central, and the most defining aspect of being AB. I think baby play without the diaper just doesn't feel right. I personally feel so much better snuggling my bunnies or sucking my pacifier when I am all diapered up and ready for bed. Doing those things without my diaper feels really empty.