T-Mo soon to roam on Sprint towers

https://www.androidpolice.com/2020/09/12/t-mobile-customers-can-now-roam-on-sprints-former-network/

That is good news.

What if you have two towers.

T-Mobile further and weaker

Sprint closer and stronger

Does it pick the better tower?

Does the article just state that phone goes to Sprint closer f no T-Mobile towers around?

Answers to your questions here: