Synchro between devices

Hi,

I use synchro betwwen 2 computers and my smartphoen, but I have only the bookmarks at the date of the synchro.
Since this day, I add bookmarks, but they don’t appair on the other devices
Is it normal ?

Also, is it possible to view the tab opened on a device (for exemple a computer) to open it on an other (a smartphone) like Chrome ?
Is it normal ?

Thanks you