Connect-PnpOnline asks for creds every time?

[cacheman098]

If i connect to PNPonline at the root , it will prompt for creds every time ?
it wont use cached creds or tokens, is this expected?

$con= Connect-PnPOnline -Url $url -ReturnConnection -interactive

$con= Connect-PnPOnline -Url $url/child -ReturnConnection -interactive
(tried without switches and got errors)

Manifest 1.12.0 PnP.PowerShell