Ahhhh well with the BTC hardfork that is complex. There is a group who says they will chain split no mater what. Most of the community is trying to avoid a chain split by following a certain path. Check out my post below for much more information. There is a diagram that shows every different possibility.

https://steemit.com/bitcoin/@kyle.anderson/fork-christ-s-sake-bitcoin-is-going-to-fork-is-segwit-bitcoin-whose-side-should-i-be-on