Chrome doesn't have a calendar unless you're referring to an add-on or a website that has a calendar. The stock phone calendar isn't a networked resource but if you have your phone linked to a google account it can pull in that calendar.
I only have one Gmail account.
I think the choice of calendars is the culprit and I found it easier to work with the previous android upgrade, not marshmallow, to choose the right one.
On the c I click Chrome then click the dots in a square upper right, I then choose Google calendar.
I then go to my phone and click on the Google calendar. I sign in to both but although the stock and google on the phone sync, the PC does not.
I am unsure as to how to "pull in" the calendar.
My desktop email client is Windows Mail. That is what I meant by Windows 10.
I tried the others but this does the job. I disliked Thunderbird although it is most likely to do many Google things.
I cannot figure my calendars out like I could on the phones previous Lollipop.
I have names like my gmail address -2 of them and my name.
I just thought I would let you know that the Google Calendar does not react even on a Chromebook within a secure network which indicates there is a problem besides the Creator update I am now on an Android phone and an Android Chromebook yet the phones calendar does not sync with the Chromebook calendar
It syncs between the Google calendar app (android) and Google calendar plug-in in Chrome for me almost instantly. Are you sure you don't have multiple accounts configured on your phone? I have more than 1 and it's easy to post to the wrong one.