Complex sentence: Speaking about Daughters'reunion Marshall stated, "We've been talking about it for a while" and also mentioned how people would ask regularly him "what was going on with Daughters" while he was on tour with his other band Fucking Invincible.
Split into simpler sentences: Speaking about Daughters' reunion Marshall stated, the band had been taking about it for a while. He also mentioned how fans would regularly ask him "what was going on with Daughters" while he was on tour with his other band Fucking Invincible.