Using transactions in services?

Question

symfony

The question is theoretical.
There is a service1 whose actions are wrapped in a transaction.
There is a service2 whose actions are wrapped in a transaction.
There is a service3 that should use 1 and 2, and one common transaction is needed.
How do they act in such cases?
In my understanding: transactions are removed from service1 and service2, service1_with_transactions, service2_with_transactions are created, and service1_with_transactions is used instead of service1, similarly for the 2nd.
At the same time, Service3 uses 1 and 2.
I repeat, the question is purely theoretical, I could not immediately come up with real use cases.

Answer 1

Flies separately, cutlets separately. Logic needs to be stored in some methods, transactions with a call to logic in another.

Answer 2

If service 1 and service 2 must be used somewhere else, it makes sense to move their functionality either completely separately, without transactions, or partially into a public method. In the 3rd one transaction.
If you do not do this, working with events after flush, and others like it, becomes at least difficult.