Passing by or crossing without meeting (e.g., letters crossed in the post, people missing each other); things going astray or crossed.
手紙が行き違いになって、両方とも返事が届かなかった。
The letters crossed and neither reply arrived.
二人は同じ駅で行き違いになって会えなかった。
The two missed each other at the same station and couldn't meet.
メールの行き違いで誤解が生じた。
A crossed email caused a misunderstanding.
A difference of opinion, misunderstanding, estrangement, or disagreement between people.
誤解が原因で二人の間に行き違いが生じた。
A misunderstanding caused a rift between the two.
意見の行き違いで会議は紛糾した。
The meeting became chaotic because of disagreements.
長年の行き違いがあって、今は疎遠だ。
They have had years of estrangement and are now distant.