because Blizz can’t be arsed to conglomerate the connected realm forums, I’m “bookmarking” this so I don’t have to search GD every time I can’t remember which realms are connected 
https://us.forums.blizzard.com/en/wow/t/realm-connections-september-2-3/627751
good post.
thanks - was just checking for this.
On July 31, 2014, Malfurion was connected to TROLLBANE
On August 4, 2020, Malfurion/Trollbane was connected to Grizzly Hills and Lothar
On September 3, 2020, Malfurion/Trollbane/Grizzly Hills/Lothar was connected to Gnomeregan and Moonrunner
On September 17, 2020, the servers Ghostlands and Kael’thas joined the group
COMBINED! 8 total servers/realms
MALF-TROLL-GRIZZLY-LOTHAR-GNOMER-MOON-GHOST-KAEL
It’s surprising this post never mentioned the ghostlands and kael’thas addition.
Forums for the connected realms: