Hi @max_matinpalo, you will need that extra query in any case.
That’s not possible right now. If you just want the results, just execute all the stages in the aggregation pipeline before the $merge stage. But if you want it to be outputted into another collection you’ll need that extra query.
In case you have any doubts, please feel free to reach out to us.
Thanks and Regards.
Sourabh Bagrecha