If it’s a 9 game SEC schedule, they have to make the 5th home game every other year be the “home” team in Dallas, otherwise the “home” team would only have 4 conference home games and only 3 in their actual stadium. That would give UT and OU 4 true home games per year. Even if all 3 OOC games were at home, that would only be 7.
In the opposite scenario where the road team in Dallas had 5 home games at their stadium, plus 3 OOC at home, you could have 8. But that means the odd years when Dallas counts as one of your 4 home games, you’d only have 3 at DKR + 3 OOC = 6 home games. I don’t think there’s a permanent method for 8 home games at DKR annually under a 9 game SEC schedule. If it was an 8 game conference schedule, you could do 4 home OOC games and 4 conference home games to get to 8; but that will only be when you are the road team in Dallas. The home team in Dallas would only have 7 games at their stadium. Conclusion: if you went home only for OOC, you will either alternate 6/8 true home games per year, or have 7 every year, or alternate 7/8 per year. CDC is high.