The American League Championship Series is set and it's a doozy:
Most combined wins, postseason series
212
Yankees vs. Padres, 1998 World Series
211
Yankees vs. Mariners, 2001 ALCS
Red Sox vs. Astros, 2018 ALCS
210
Orioles vs. Reds, 1970 World Series
209
Cubs vs. White Sox, 1906 World Series
Yankees vs. Cardinals, 1942 World Series
Orioles vs. Mets, 1969 World Series
Just a couple of more wins here or there by the Boston Red Sox and Houston Astros during the season and this would be the most high-powered postseason matchup in baseball history.