CLEAN : Police and protesters at HKs high end Central district

The transcript consists of a brief inquiry about the duration of something, followed by an expression of gratitude.

What do you think the phrase 'How long?' implies in a conversation?

How can the phrase 'How long?' affect the flow of a conversation?

Can you provide an example of a situation where 'How long?' would be an appropriate question?

In what contexts might someone say 'Thank you.'?

What emotions or sentiments can be conveyed by saying 'Thank you.'?