I have seen that you are sharing multiple screenshots of a single conversation because you conversation history is longer than screen height.
So to overcome this issue, there is very useful utility tool in the form of chrome extension that could capture whole page at once.
Please install this Chrome Extension for taking full page snapshot at once on click of a button. You can download the snapshot as pdf or png and share across.
Full Page Screen Capture - Chrome Web Store
Full Page Screen Capture extension is amazing! I am Chicago based award winning designer. I am doing market every day. Going deep is what make me create great value and results for my clients. Great part of that research is scanning the web pages. Before the "Full Page Screen Capture" it was a nightmare to scan hundreds of pages.