Check out the map at the beginning of this video: https://www.nhl.com/...8694/c-52237603
There are eight divisions of four teams. Buffalo is in with NYR, NYI, and Boston. There is a "Canada East" division comprised of the two Ontario teams, Montreal, and Quebec.
EDIT: Here is an imgur of the map in case you don't want to load the video or in case the NHL catches on and takes it down: http://imgur.com/a/7c4Zc
Edited by Eleven, 17 June 2017 - 11:41 AM.