相手 あいて さき選択 せんたく接続 せつぞくだったら
aitesaki sentakusetsuzokudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 相手先選択接続

1. If/when the other party chooses the connection.; If/when the other party selects the connection.

Tara Conditional
Computing