So did you kill him or speech check...did you nuke anyone....also side note with how this dlc ended I don't we'll ever see the west NCR or legion again.

I get the feeling that LR was here to wrap up some loose ends. People have been speculating that NCR will be the canon ending, people have also speculated that CL is the canon ending. But LR destroyed both (kind of). This pushes us towards Mr. House, but you can also kill House, which is too open for a canon ending. So the OFFICIAL CANON ENDING is probably Yes Man, since you can't destroy him.

There is no caonon ending there's just too much choice we'll never see New Vegas again the reason we had canon endings in the other fallout games was because you did the same quest line until the end where you could suddenly turn and be evil...in nv there is no defined good or evil side and 4 quests lines