Not for certain, because there is no public deal. My understanding is that no increase was given by the broadcast partners for the four American teams. The existing members of the conference agreed to take less money so that they could give those four teams some small distribution, I think it's in the $15 million range, during the period after their joining but prior to the new contract going in place. After the new contract they will receive full shares.
The big 12 contract provides that any additional "P5" members to the conference cause the conference broadcast contract to be increased by a pro rata share. Brett Yormark has indicated that their broadcast partners have a greed to treat certain G5 additions as if they were P5 additions and give them a pro rata share. Yormark expressly indicated that Connecticut is in an institution that would receive a full pro rata share.
The three-year period that you've referenced appears to approximate the deal that the American school Scott, I actually believe it's only two years and not three years of receiving a partial share. But the engine that drove them getting that reduced chair doesn't apply to Connecticut. So theoretically we should receive our full share. Now, it is possible that even though the conference will receive a full share from the broadcast partners, they could conceivably pay us less than a full share. I don't believe that will happen. To the extent we get a reduced share of payout at all, I think it's possible we may get a reduced share of the college football playoff money.
Another thing to keep in mind is that the big 12 starts a new contract in 2025 and at that point all teams, including the four American teams will get a full share. There's a rumor floating around that Connecticut football may actually move to the big 12 next season. I don't know if that is correct. I wouldn't expect basketball to move prior to 2025.
The big take away is that the American teams distributions is actually getting paid for by the other big 12 teams agreeing to reduced share. That isn't the case for the addition of Connecticut.