I presume that if the Harbaugh's made it to the Superbowl, it would be the first time brothers met each other as coaches in it?
You'd be correct. There were two sets of brothers, who played in the same Super Bowl. Lyle and Glenn Blackwood, known as the Bruise Brothers, started in the Miami secondary as part of the Killer Bs defense in '83 and '85. The year before their SSB debut Archie and Ray Griffin were on the Bengal roster. All three instances where a SB team had a pair of brothers on the team, the team lost (twice to SF).
