@Emiel1
On many chat sites you can see if a recipient is typing a response in real time, but I can't say I have seen that in the Airbnb message stream! I have however had the situation where a guests response has been delivered into the message stream while I am in the process of typing more information to that guest!
It sort of plays merry hell with the various equipment around you!
You are in the midst of typing a response and another message from the guest bumps your response down the page, then the phone app sms alarm sounds prompting you to check your inbox for a new message from that guest, and then the computer new email message sounds prompting you to go to your inbox and read a new message from that guest!
You start to get punch-drunk after a while!
Thanks for the heads up Emeil, I will pay closer attention next time I send a message to a guest that requires a response!
Cheers.......Rob