to establish a connection (with something)
I will get back to you soon.
to sever the connection―cut off the communication―(between the two)
to sever the connection (between the two―with the other)―cut off the communication (between the two―with the other)
to establish a connection (between the two―with the other)
to ask for information about something
連絡してね。
will confirm and go back to you