馴染む Becoming familiar with

電化製品の相談に行ったら、

接続が馴染むまで時間がかかりますとのこと。
家電なのに何故???…、笑。
 
I went to consult about the electric appliances,
*You need to wait for connecting each other for a long time 
because becoming familiar with them.*
It is  electric appliances, so I want to know the reason why.
・・・Ha-ha.