Spring Batch and Spring Integration, who should run whom?

Question

Java

When building the architecture, the question arose: Who should launch first and launch the second?
There are two options:
1. Integration is launched first, after processing Batch is launched and processes data from Integration.
2. Batch is launched in the reader of which Integration is launched.
Can anyone come across a similar problem, tell me which option is better, or maybe there is a third one.
UPD: The decision was made in favor of the second option, since Batch natively supports multithreading.