miscommunicate

He had never even come near to capturing a wife to miscommunicate with.

Mark was probably off poking around and somehow had managed to miscommunicate with Gary.

Thus did two highly communicative individuals - who like each other and were speaking and listening carefully - miscommunicate totally.

Hooking Up is set at a fictional university where the students spend most of their time emailing and twittering, but still manage to miscommunicate.

In practice, many activities (especially summary elements) have front-loaded or back-loaded work plans, so a Gantt chart with percent-complete shading may actually miscommunicate the true schedule performance status.