Here's an article you may find useful. Obviously, there's a lot of remote team management happening these days, but this was an issue for agile teams even before the pandemic

https://www.business2community.com/workplace-culture/how-to-manage-remote-teams-effectively-023494923Clicks: Anne Patton, Andres Atencio-Sandoval, Derek Molnar

What's your experience working as a member of a geographically-dispersed team? What techniques have you used to stay in touch?