We've always had at least 1 power conference opponent though regardless of the pre ACC raid BE, 16 team BE, AAC, etc. I went back through the schedules all the way to 1999 and between 1999 and 2020 we didn't play a power conference team at home in only 1 season (2003). Then from 2021-2024 we've played/scheduled to play one such game. Hopefully this satisfies
@navery12 sample size requirements.
2010 - Texas
2009 - Michigan
2008 - Georgia Tech
2007 - Ole Miss and Indiana
2006 - LSU
2005 - Indiana and North Carolina (wow)
2004 - Oklahoma
2003 - None
2002 - Vanderbilt, Oklahoma and North Carolina
2001 - Arizona
2000 - Texas
1999 - Michigan State