Internal vs. External Offer Letter System Assigned Templates?

Summary

Can separate system assigned templates be used for internal vs. external offer letters?

Content

We would like to have different system assigned email templates for sending an external candidate the offer letter versus the internal candidate the offer letter.  In TBE it looks like only one template can be assigned to a process.  So for the 'Email Candidate Offer' process, we cannot have more than one template.  Any suggestions on what we could do?  The messaging to an internal person vs. an external candidate is different.