英和和英

have the connection undone

to establish a connection （with something）

having come into contact

The correspondence lapsed

I can not comprehend―I am at a loss to comprehend―It is incomprehensible―unaccountable―mysterious―strange.

make contact

momentary contact

to sever the connection （between the two―with the other）―cut off the communication （between the two―with the other）

difficulty of communication

when it comes into contact

stay clear from

to be in contact

not tied

not associative

to sever the connection―cut off the communication―（between the two）

incapable of harmonious association

a point of contact

a point of contact

not occupied or engaged with

I didn't receive any notification.

have lost in touch with you

immediate contact

a contact-breaker

poor connectivity

have a bad connection

Re-contact

asynchronous communication

not crossed

Disconnected

not integrated