CCleaner does not clean Google Chrome's cookies. In particular, if before running CCleaner I am connected to GMail in Google CHrome, after running CCleaner I am still connected to GMail
In CCleaner, all options under the "Google Chrome" heading have been selected.
In Google Chrome, the option to run background apps after Chrome is closed have been de-selected.
In Google Chrome, sync has been disabled.
CCleaner version 5.63.7540 (64 bit). There is no sync to the cloud.
Google Chrome version 79.0.3945.130 (Build ufficiale) (a 64 bit).