^I don't recall A Singular Destiny
leading into VGR in any way, and it has virtually no connection to TTN. And Losing the Peace
was the first post-Destiny
TNG book; I don't recall the TNG cast being in ASD. So I think it would be perfectly accurate to say that ASD is the beginning of, or at least the prologue to, the Typhon Pact
series. After all, it is the book that introduced the Pact.