PCF8574 INT pin on KC868-A6 — Is it connected to ESP32? Schematic request.

[Asil]

1. A6 board have not used the INT pin for PCF8574.
2. the INT pin not connect with pcb wire, so if you want to use, you need to solder the pin for your extend wire.
here is schematic of KC868-A6: https://www.kincony.com/download/KC868-A6-schematic.pdf

Thank you for the clarification and for sharing the KC868-A6 schematic.
I also have a KC868-A16 board.
Could you please confirm whether the PCF8574 INT pin is connected to any ESP32 GPIO on the A16 model?

• If yes → which GPIO number is it connected to?
  
• If not → is there a pad/test-point where we can manually access the INT pin?
  Also could you share the full schematic for KC868-A16