Different experience for me, ~500Gb so about 10 chunks of 50Gb (largest chunk size) that had to be downloaded by hand because of their auth. When the download got interrupted I had maybe 4 more tries, might have been more, but after trying to many times the entire takeout expired. Automating the process, and using smaller chunks didn't work at the time because of their opaque API and its auth.

I feel like this has been made a shitty experience intentionally.