UK: Extinction Rebellion Climate protesters target G7 summit.

The transcript contains a brief remark, 'by the way,' which serves as an introductory or transitional phrase.

What does the phrase 'by the way' typically indicate in conversation?

In what situations might someone use the phrase 'by the way'?

How can the phrase 'by the way' change the tone of a conversation?

Can you provide an example of how to use 'by the way' in a sentence?

What are some alternatives to the phrase 'by the way'?