Smith) that Young could likely be persuaded to go to BYU if the money and timing was right for his family. He had also interviewed in 2019 when Pope was hired so he was a known quantity and his NBA trajectory skyrocketed after that point.
He was also a hire that got Ainge and Smith excited enough (because they knew how good he was) that they would be willing to invest more heavily in the program.
Armed with that information, it seems pretty obvious that Santiago would wait to see what Young said before interviewing anyone else.