I am just wondering if we can join alive prayers when they are broadcast.
The scholars say this is not allowed, since one’s prayer line must be
connected or in view of the rest of those praying. Listening on a
loud speaker is okay if there is a physical connection (like a hallway
or stairwell or balcony) that is connected to the others praying. But
on a broadcast there is no physical connection. Some of the Madhahab
even limit the distance between the prayer lines.
Allah knows best.