Timeout via Postman

Hi Guys! I'm building complex logics where I generate 60-80 calls to OpenAI within one workflow. If I test the workflow vie BS it works fine, even when the completion takes up to 10-15minutes. However when I call the endpoint from let's say a Postman, it dies after 5 min, with t 504 gateway timeout. Although the execution still runs and completes on BS according to the logs.. I have also checked my Postman preferences, and there is no max timeout set for requests (0=never timeout) Is there any timeout limit hardcoded for the endpoints? Many thanks in advance!