As Peña was speaking to Joe Rogan post fight in the octagon, a camera showed Harrison (18-1 MMA, 2-0 UFC) listening in. But instead of mentioning Harrison’s name, Peña called for a trilogy bout with Amanda Nunes, which Cormier says was a mistake.

Ariel Helwani reacts to the co-main event from Saturday night's slate -- including how Peña reclaimed the women's bantamweight title with a split decision victory.

Daniel Cormier believes Julianna Pena made a mistake not building a Kayla Harrison fight during her UFC 307 post-fight interview.