Question about JFET resistor connection
Yes. In the p-channel JFET there is a PN junction across the source-gate terminal. This junction has a very low capacitance. When the voltage on the gate falls to zero, the gate-source capacitor, namely Cgs, starts to discharge through the 2M ohms resistor.



Then the charge quickly disappears and JFET starts to conduct. This will turn off the MOSFETs.