Problem with ESP NOW Channels

[lalitahuja33]

Hi, I am using ESP NOW in production. I have two clients. Both of them have 4 ESP32 which are communicating through esp-now. And they are located next to each other. So to distinguish I kept the ESP-NOW and Wi-Fi Channel to 2 and 3 respectively. While testing in dev boards the code was working fine. But in production in-spite of having different channels all the 8 ESP32 were intercommunicating which should not happen. So to resolve this I changed the channel numbers to 1 and 3. After changing it was working fine. But I couldn't find why this was happening.

I have used this code:
https://github.com/boarchuz/espnow_basic_example

Thanks in advance.