The phrase often implies a delayed understanding, suggesting it took time to 'cotton on'.

Realization Delay

'Cotton on' can imply a gradual realization, not an instant one.

Subtle Nuance

This phrase is informal and more common in conversational English.

This means developing a comfortable relationship or familiarity with someone.

Using 'cotton on' can suggest friendliness and a positive connection.

Becoming familiar may take time; 'cotton on' doesn't always mean it happens fast.