internet - Where does Google Chrome automatically save pages?

I opened the following page: https://goughlui.com/2014/10/01/usb-cable-resistance-why-your-phonetablet-might-be-charging-slow/

When disconnecting WiFi and even after rebooting the mobile phone, the page can still be read due to being saved automatically.

Left to the URL bar, an indicator looks like this:

This also shows up when opening manually saved pages, which are saved as MHTML files in the default download folder.

However, an automatically saved page can not be re-downloaded manually to get to the download folder, because the arrow is greyed out.
I wish to copy some automatically saved pages into the download folder.

Where are the files of automatically saved pages stored?