Hi, I most frequently use polling ( “pull” ) as it is easier to process the reply data because the expected reply message ( arriving about 20ms later ) is known.   I have included qite a bit of TX and RX message checking in my code, including collision and corruption checking, but could do more, especially when considering scenarios where multiple devices are on the One Wire Bus.  I have tried “Sniffing” too, but that was in a prototype CI-V / ethernet Bridge which attempted to “catch all” and pass them via ethernet to a reciprocal device .  demo of latter :   https://youtu.be/N0np3d6_tgw