>>149041782
Yes, they were always allies in the finale. This was the story pitched by Lucas, with the original scripts written by Matt Michnovetz back in 2012. It was more like a reluctant alliance, since they had a common goal in capturing Maul. But we don't know how Ahsoka and Bo originally came in contact. Coruscant Underworld arc was changed in the Disney release to tie into the finale, since it was originally in S6, so Bo and Maul were originally not in it. So they originally met in S8 probably, in the Sith Shrine arc, which was the penultimate arc right before Siege of Mandalore originally.