Seeing it on your PC
Chrome holding a connection to a Google address on 5228 is waiting for web push notifications.
Should you block it?
Normal outgoing. Blocking it delays or stops notifications.
Check it on your PC
Run this in PowerShell to see what is using port 5228 right now, and which program owns it:
Get-NetTCPConnection -LocalPort 5228 -ErrorAction SilentlyContinue | Select-Object LocalAddress,LocalPort,RemoteAddress,RemotePort,State,@{n='Process';e={(Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue).ProcessName}}No output means nothing is using the port at the moment. For every connection at once, paste netstat -ano into the netstat explainer.