attempted to snake both units shower but was unsuccessful. Cable snake just kept crossing connection under ground and coming up I’m opposite shower. Attempted to snake via roof but shower vent tied into vent for toilet in wall and was unable to gain access to venting for shower. Recommend opening drywall above toilet where shower vent ties into toilet vent. Once this is exposed I can attempt to open up vent for shower and run cable down vent in attempt to clear clog