BLE on while sleep: advertising vs connected power consumption

I have two Particle devices that connect via BLE.
My initial plan was to make the BLE peripheral device sleep so the BLE central device can wake it up when needed.
I just discovered by mistake that the peripheral device can go to sleep while maintaining the BLE connection with the central device.
I knew that BLE would continue advertising, but I did not know BLE would continue to be connected when the device was going to sleep.

Since the peripheral device needs to consume the lowest power possible while sleeping, has anyone have an idea if the power consumption is the same if the device is sleeping and BLE connected vs sleeping and BLE advertising?


Basically the same. This is for the Boron LTE in ULP sleep mode, advertising (top) or connected (bottom).


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