Thank you so much!
So my problem was that I had the audio track in a "voice" bus, and I connected the bus to the insert return on the MIDI track. That way it didn't work, but creating an insert in the audio track and connecting it to the insert return instead of the bus directly worked. I thought it was equivalent, I'm still not sure about the differences between creating inserts and connecting buses. Maybe connecting the buses only creates the connection, but not forces anything to go through it, and the inserts force the sound to flow through the connection, or something like that?
Thank you so much!
So my problem was that I had the audio track in a "voice" bus, and I connected the bus to the insert return on the MIDI track. That way it didn't work, but creating an insert in the audio track and connecting it to the insert return instead of the bus directly worked. I thought it was equivalent, I'm still not sure about the differences between creating inserts and connecting buses. Maybe connecting the buses only creates the connection, but not forces anything to go through it, and the inserts force the sound to flow through the connection, or something like that?