it will be on neither of them - it will be, in the uk & ireland on sky sports box office. so, expect to be on the sports ppv channel, if it all goes well. or just watch on hbo! 4:45 PM EST/1:45 PM PST/9:45 PM BST,GMT/10:45 PM CET
There's often a lot of cross-fertilization, however. The hows and whys of that I do not know. The Canelo/Cotto, for example, was an HBO PPV event but it was also carried on BT and BOXnation. It's often hard to know who all the carriers will be until shortly before the fight.