Guy at work knocks twice on my desk when he’s heading out. Today he tapped lunch table twice in same rhythm with empty drink bottle. is this flirting?

I was the only one sitting at the table when he left. He always does this after saying bye to me. It’s not a hard knock either it’s soft.

Guy at work knocks twice on my desk when he’s heading out. Today he tapped lunch table twice in same rhythm with empty drink bottle. is this flirting?
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