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Both links download same the same file name. Tested both files and it is just the same installer.

The file name byte sizes are not the same though.

Part 1 file size is: 2.4 GiB (2,578,062,696 bytes)

Part 2 file size is: 2.4 GiB (2,578,062,839 bytes)

Screenshot to show Linux download page.

Hopefully it will get fixed.