When you're just not live anymore. Can you then watch the entire stream? How does it work?
So with your PC at Twitch click on your profile picture at the top right, then "Settings" then "Channel and Videos" then activate "Save previous transmissions".
You can find the saved streams in your channel under "Videos", or under "Video producer" if you click on your profile picture.
These videos are only saved for 14 or 60 days. But e is more precise in the said setting.
Of course, you can't change anything with other streams. It is up to them whether they want to save it or not.
Man of honor kiss your heart