Email - Connected Accounts

Hi

I've just moved to outlook.com and setup my Connected Accounts however despite not ticking "Leave a copy of messages on the server" the emails still exist in the 3rd party email server, meaning that I have still to access the 3rd party server to delete them, what have I missed in the setup?

Also it would appear that outlook.com is only checking the Connected Accounts hourly for new emails, where can I change this?

Thanks