Working together (2,6)

I think it could be either:

Which length description are you looking for?:

2,3

2,6

in tandem

'working together' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for in tandem that I've seen before include "One behind the other or alongside" , "'One behind the other, as on a bicycle (2,6)'" , "Working together" , "Manned it as twosome" , "Together - as on a bicycle made for two" .)

I've seen this clue in The Times and The Sunday Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.