Meanings of perceive the connection in English

Rickman's face expressed an utter inability to perceive the connection.

Plowden seemed not to perceive the connection.

He could not perceive the connection of ideas between Palmer the Rugely poisoner, and Philip Sheldon the stockbroker.

He affects gallantry at his age, and I perceive the connection in his ideas is becoming feeble and irregular.

This invites the consideration (you may not perceive the connection) of Sets and Society, a subject which we can pursue tomorrow night.

The computers might never have perceived the connection between four peculiar sets of signals, from space-probes on independent orbits millions of miles apart.