Multiple PIR Sensors

Other Hardware Sensors
1

Is it possible to have two PIR sensors triggered at the same time? Would I need to use millis() to create the following three conditions?

Condition 1: Sensor 1 is activated, message 1 appears
Condition 2: Sensor 2 is activated, message 2 appears
Condition 3: Sensor 1 is activated and sensor 2 is activated within a few seconds, message 3 appears

Thanks for your time.

2

yup
millis() can help here...

pseudo code:

unsigned long X;
if (sensor1 fires) { store timestamp X = millis(); action1(); }
if (sensor2 fires) {
  if (millis()-X < few seconds * 1000) action3(); else action2();
}