By the way...

Meaning

Introducing additional information casually.

Examples

• John: 'I finished the report. <b>By the way</b>, did you see the game last night?'
• Alice: 'No, I didn't.'
• John: 'Yes, I'll return it today.'
• Alice: 'I'm going to the library. <b>By the way</b>, do you have that book I lent you?'