Max number of connection to server GWB

Hi I have a Chirpstack deployment running on Kubernetes. I have deployed multiple replica of network server and app server but have only got a single pod of GWB running (there are some complications as we have a load balancer in front of the GWB service)

I just want to check, what is the theoretical max number of connection a single pod of GWB can accept and is there any possibilities of this GWB service becoming a bottleneck in my architecture?