OS: Chrome
Version: 61 (not sure of exact version I used on the test device just now, sorry) 
 
1) enabled ChromeVox with Ctrl Alt Z
2) make sure you are connected to a vpn (any)
3) press Alt Shift S to get to the Status Tray, then use ChromeVox navigation (Search + Right Arrow) to navigate item by item through until you reach the VPN button, and press Enter
4) Press Search + Right to get to the disconnect button for the VPN that is connected

You're not able to use ChromeVox navigation to get there. You can press Tab, but not Search + Right. This is problematic because if you can't visibly see that the button is there, then you can't know to press tab (if you're used to using Search + Right to get everywhere). 
 

Deleted: Screenshot 2017-08-29 at 10.42.14 AM.png 300 KB

	Screenshot 2017-08-29 at 10.42.14 AM.png 300 KB View Download