Remember when Alexa and Carlos PenaVega competed against each other on Dancing With the Stars back in season 21? Well, in case you forgot, they just revisited their time on the show during the October 22 episode of their podcast, LexLos ...and they also dredged up some DWTS lore about pros Witney Carson and Mark Ballas.

Alexa and Carlos (who were paired with Mark and Witney, respectively) revealed that there was “a lot of drama behind-the-scenes” during the season, with Alexa explaining, “At the time, Witney and Mark were not getting along at all so they refused to be in the same room together, and that was really hard because we’re married.”

Why were Witney and Mark (allegedly) feuding back in 2015, you ask?…