UPDATE UPDATE UPDATE:
Someone early into this thread said, “It will come apart again.” It did.🥲 There were two issues with this attempted repair. The pipe eventually would slip out of the slip joint nut and trying to utilize the piece of flex pipe that was already there with the wrong pipe ends on them. I’ve included pics of my parts list.




Four feet of new flex hose, two new slip joint nuts, two heavy duty flanged tail pieces, two tail piece washers, two hose clamps.
My reasoning for this approach, the flanged tail piece can’t be pulled out of the nut, heavy duty flanged tail piece for strength to hold the tightening of the hose claps, when using a flanged tail piece you must use the appropriate washer and not the common slip joint washer. Be careful when tightening the hose clamps, they must be tight enough to prevent leakage but I would think you could compress the pvc pipe if you over tighten the clamp.
Good luck in 2022, may all your rv systems stay heathy, may you and your significant other stay healthy and may your sewer hose never come loose while emptying the black tank. 🥴