How can I power an LED object when data is flowing and turn it off if there is no data updating?

This is a logic puzzle I cannot quite solve. I'm bringing in a huge flow of data with some sensors and a serial object setup. I want to turn an LED light on (in Max, not in the real world) to indicate that the serial is not just working but that specifically the data is flowing through into Max.

I was previously using a Message object to show the sensor data values, and once I would see that changing, I know everything is good to go. I want to replace that with a more elegant LED in Presentation mode (it would be a different situation is wireless sensors worked perfectly every time you plug them in but sometimes you have to reset a few things or re-plug a few things... the indication is a quick way to avoid catastrophe!).

The problem is not turning the light on, but turning it off when there is no data flow. That said, currently, I have found a way to get it on/off properly:

data flow goes into [t b b]

first b (right side) goes into [pipe 0 3000] --> message box with "0" --> LED

second b (left side) goes into messsage box with "1" --> LED

This works great MOSTLY. When the data begins flowing, the LED flickers on and off irregularly for one or two seconds, then stabilizes. Turning off the data flow, 3 seconds later, the LED is off, good to go.

So I can either try and stabilize the ON setup with this rig, or use a totally different rig built from scratch.

I've attached the "working" flickering version for reference, but I'm very open to any solution. Thanks yall!