You also will not get a notification for a streaming update. The only way to see if you have gotten any is to check the Maintenance tab in the GUI. The streaming update is also just a temporary supplement to the last full update. When a new full update package is received, the streaming ones you got in between regular ones are wiped out because they are included in the new full update package.
The connection also seems to only be periodically established. Mine goes on and off many times during the day.
HP6140 Laptop, AMD A8-3500M Quad Core APU, 6GB RAM, Windows 7 Home Premium 64 SP1, IE10 & Outlook 2007, Comodo Internet Security 6.3, MBAM on demand
Google/Asus Nexus 7 tablet, Tegra 3 quad core 1.3ghz, 32GB storage, Android 4.4.2, Dolphin browser, TrustGo Mobile Security
HP 5215us laptop, AMD Turion64 single core CPU, 2GB RAM, Windows 8.1 pro 32 bit, IE11 & Outlook 2007, Comodo Internet Security 6.3--- All machines behind a NAT router