The Power 4 conference that didn’t get its champion into the College Football Playoff ended up with another team playing for the national title. So much for the demise of the Atlantic Coast Conference. The league that looked most vulnerable a few short years ago when the latest round of realignment hit suddenly is doing just fine. The best proof: Miami, which plays Indiana in the title game Monday — a matchup that, at least for now, left a debacle involving conference champion Duke in the rearview mirror.