Revenue Contingency - Can we have both Pre-Billing and Post-Billing acceptance in the same order lin

 Hi

I want to use post billing contingency to defer revenue and recognize revenue upon acceptance.  However, we need to have pre-billing contingency too for operational reasons. In order lines, Its possible to have only one of the acceptance event.  Is there any way to achieve both without touching workflow?

Alternatively, I can have pre-billing event at order line level, and add revenue contingency at invoicing level so that it goes to Deferred revenue.  When I tested, it looks like only pre-billing contingency from order line takes precedence and ignoring all the assignment rules defined for deferring revenue.

Any pointers?  Thanks in Advance.