Hi guys,
I was doing 2v2 arena with my rogue partner the other day and the match ended up as a 1v1. My partner the rogue vs a prot pally healer. As u can imagine the match started to drag out.
Anyway at one point my partner blinded the pally, stealthed up and started cannibalizing the enemy hunter's corpse to regain some health. As the blind finished and the pally came over to concecrate on the hunter's corpse my mate sapped him while still channeling cannibalize. The act of sapping while channeling cannibalize didn't stop it from channeling and it kept going until the channel time was up.
Not sure how helpful this is but I just thought I would put it out there. Maybe you can pro it up in arena too