To join again what was joined and then parted. Reconnection is not a first meeting and carries the interval with it.
Re- (Latin, again) attached to connect, from Latin connectere (to bind together): con- (together) + nectere (to tie, to bind); reconnection is a rejoining that carries the memory of a prior joining.
To join again what was joined and then parted. The root's rejoining is never a first meeting — it carries the interval that came before it, whether or not that interval is spoken of.