Thanks for clarifying.
So based on this My personal preference when it comes to this situation is to fully write the copy or email in Clay and push the entire email body and subject line as variables from Clay into Instantly.
Sounds like in my Clay Person table, I'd need to create a column for Email 1, Subject Line and Email 1, Body then Email 2, SL, Email 2, Body and so on right?
So if I wanted to have my sequence be 5 emails long, I'd need to add 10 distinct columns in Clay, then push those distinct columns into Instantaly