Andy Reid is 336-207 in the regular season as a head coach. Kyle Shanahan is 23-25.
Reid has been in the NFL since 1982. Shanahan's first NFL job came in 2003.
Reid, 61, called Shanahan, 40, a "kid" this week.
"He's done a very nice job. He's a smart kid, now. He's sharp," Reid said. "Great for this league. You have this influx of these new coaches with these great minds on both sides of the ball. So that makes this league strong."
Indeed, Shanahan and Reid are two of the best offensive coaches in the NFL. They're both rooted in different versions of the West Coast offense. Reid's version came from working under Packers coach Mike Holmgren, who learned the system with the 49ers from Bill Walsh.
Shanahan, of course, is heavily influenced by his father, Mike, who replaced Holmgren as San Francisco's offensive coordinator in 1992.
Both Reid and Shanahan are trying to win their first Super Bowl. Reid's in his 20th season. Shanahan's in his third.
5. CHIEFS LACK OF SUPER BOWL HISTORY VS. 49ERS AND #QUESTFORSIX
The two teams have vastly different histories when it comes to the Super Bowl.
Kansas City will be making its first appearance since beating the Vikings in 1969, a year before the AFL-NFL merger was finalized.