Is the @Transaction annotation enough to transact persist across two Mongo databases?

Question

MongoDB

We use spring boot, I work with Mongo recently, through a cluster on mongo atlas.
I know that since version 4.2, it seems like the transaction option has been added.
I have a method that should save data to 2 mongo dbs (in native service and send a save request to db to another service). It is fundamentally important that the data was stored in both databases. Otherwise you need a rollback.
Question: Will @transactional work for such a method? And do I need to explicitly register the mongo bins (or is boot autoconfiguration sufficient)?
Thanks