Yes, as long as they are not syncing the same objects to the same tenant.
Steps to migrate from AADConnect to Cloud sync as well:
https://learn.microsoft.com/en-us/azure/active-directory/hybrid/cloud-sync/what-is-cloud-sync
More info here:
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1)Can azure AD Connect Sync and Azure AD Connect Cloud Sync exist in parallel
Yes, as long as they are not syncing the same objects to the same tenant.
Steps to migrate from AADConnect to Cloud sync as well:
https://learn.microsoft.com/en-us/azure/active-directory/hybrid/cloud-sync/what-is-cloud-sync
More info here:
Another Question: So it's possible to Sync Devices (OU Computers) with Microsoft Entra Connect and Users (OU Users) with Entra Cloud Sync on the same Machine from the same OnPrem AD?
Ok, sorry, You are referring to this?
Azure AD Connect is the same thing as Azure AD Connect Sync
https://learn.microsoft.com/en-us/azure/active-directory/hybrid/connect/how-to-connect-sync-whatis