On form submission I am sending some data to netsuite via soap; netsuite is a third party tracking service. Unfortunately their ingress is notably slow and using this hook, the "thank you" page is delayed until netsuite returns success on the submission, which can take many seconds. This is problematic usability-wise obviously, and it also seems to be causing users to reload the page causing duplicate submissions.
Anyway, is there a hook I can use to perform this operation _after_ the thankyou page is displayed? Any other workaround suggestions would also be appreciated! Thanks.