Mega to Mega rplidar

hello i am knew here.
is it possible to send rplidar a1m8 data (The data i need distance and angle i have working code that give me this data) to other Mega that he is going be the master, and while master receive this data he also get data from python and control 3 motors?? Thank you.

is it possible to send rplidar a1m8 data...to other Mega

Yes, it is.

that he is going be the master

A master asks for data. A slave responds. A slave does NOT push data to the master. Since you apparently want to the "slave" to push data to the "master", you are using the terms master and slave incorrectly.

and while master receive this data he also

When, not while.

he also get data from python

The Mega can get data from the serial port. What is sending the data is irrelevant.