It is possible that you have not encountered any issues with syncing due to several factors. First, it could be that your browser is not causing any conflicts with the syncing process. It is also possible that you have been able to keep too many instances open without any issues. This could be due to the fact that you have a reliable internet connection and that the applications you are using are well optimized for syncing. Additionally, it is possible that the applications you are using have been specifically designed to allow multiple instances to be open without any conflicts. Therefore, it is possible that you have not encountered any issues with syncing due to the combination of all the above factors.