Vakhmistrov’s Circus, the Tupolev TB-3, a four-engine behemoth so large that it could serve as a mothership to five little fighters,

A TB-3 once did manage to take off with four fighters attached, then joined up with a fifth while circling the airfield, with a combined nine engines going.

https://www.futilitycloset.com/2021/10/28/mama-bird/