That's PowerNap. Depending on your settings, your Mac wakes up briefly to check e-mails, updates and sleeps again. Normally it happens only during charging, but you can enable on battery power or disable it completely.
Bluetooth and wireless radios stay on for a longer while because to keep everything connected if you are moving from room to room at home or at work, also it's made possible because all radios are higher end models with their independent processors.
so basically you're retracting your previous statement that the notebook sleeps as soon as you close the lid? Because doing all that shit isn't sleeping, even if their marketing calls it a 'nap'
