How to transfer files from OneDrive to another on the same computer? If you mean another OneDrive, you can share from OneDrive to it then login another account to visit. On the same computer, if you don’t want to switch accounts, you can login one on client, another on web, but they can’t link directly.
If you mean another cloud drive, they can’t be connected directly as well. But with a tool called MultCloud, they can be combined. MultCloud works as a middle-man. Its function is managing cloud services and syncing, transferring between them. Following is a tutorial: https://www.multcloud.com/tutorials/transfer-files-from-one-onedrive-account-to-another.html.