So between Max's head getting blown off and Gus' vow for revenge in BCS, there's at least a decade passed, right?

We also know that Hector has a number of nephews (Tuco and Lalo) and grandsons (The twins and Joaquin) but no brothers or sons are seen.

And taking Hector's "My family built this whole buzineess, you should be kiiissing mai asss right naaw." speech before he loses the ability to talk again, we can deduce that said sons and brothers were in the business and are no longer alive.

Could Gus' vendetta have started earlier than what we see in BCS and continuing into BB and that he's involved in their disappearance?

What do you guys think?