TFmini Lidar grd connection with Nano Every

I've read alot on the forums about using the Vin to power the Every with a 9V battery. The TFmini will connect to the 5V out but does the grd share with the grd pin for the 9V battery? There is a grd on the other side of the Every next to the RX and TX pins but I'm using this grd to a prototype bd with LED's. I'm pretty new at this so I apologize if this is a stupid question.

I'm not quite clear about what you are asking, but all the pins labeled GND on the board are connected to each other.

The grounds of all the devices connected to the board should be connected to the board ground.

You cleared this up for me. I was concerned about connecting multiple ground wires to GND. Thank you for reponding!

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