What he said is a subordinate clause.

You can connect sentences using conjunctions.

His role is the team leader.

He gave instructions to his subordinates who are in a relationship of subordination.

He is always subordinate to his boss.

He was holding my hand tightly.

He was running while holding a bag.

He always carries an umbrella around.

He clenched his hand until his knuckles turned white.

The nodes of this tree are distinctive, aren't they?