Out of touch

I had been out of touch with my old friend for a long time when she called.

I don't feel a single thing / Have the pills done too much / Haven't caught up with my friends in weeks / And now we're outta touch

Near-synonyms: out of the loop; out of one's mind

The billionaire, who was once a man of the people, grew increasingly out of touch.

They're so out of touch that all they can do all day is compare yacht sizes.

Near-synonym: out of one's mind

Did his answer strike you as out of touch with reality?

Bought a ticket for a runaway train / Like a madman laughing at the rain / A little out of touch, a little insane