Can I execute 2 loops at the same time?

Hi. Thank you for your responses.

So what I'd like to happen is I am implementing this code:

void ACShutterMainLoop() {
  digitalWrite(enterButtonState, LOW);
  digitalWrite(exitButtonState, LOW);
  digitalWrite(setupButtonState, LOW);
 
  int i=1;
  while(i) {
   delay(200);
   enterButtonState = digitalRead(enterButton);
   exitButtonState = digitalRead(exitButton);
  
    if (enterButtonState == HIGH) {
      Serial.print("Enter Button pressed :) \n ");
      int totaltime;
              
            do { 
              digitalWrite(TurnONLED, HIGH);
              delay(TurnOnTime * 1000);
              digitalWrite(TurnONLED, LOW);
              digitalWrite(TurnOFFLED, HIGH);
              delay(TurnOffTime * 1000);
              digitalWrite(TurnOFFLED,LOW);
              totaltime = totaltime + TurnOnTime + TurnOffTime;
              Serial.print("\nTotal Time:");
              Serial.print(totaltime);
              Serial.print("\n");
            } while(totaltime + TurnOnTime + TurnOffTime <= ShutterDuration);
      
      i = 0;
      delay(5000);
    }
    else if (exitButtonState == HIGH) {
      Serial.print("Exit to Temp Monitoring\n");
      i = 0;
      delay(2000);
      TempMonitorLoop(); 
    }
    else {
      idleCounter = idleCounter++;
      Serial.print("Idle Timer: ");
      Serial.print(idleCounter);
      Serial.print("\n");
      delay(1000);
            if (idleCounter == 60){
              Serial.print("Idle Time reached maximum.\n");
              TempMonitorLoop();
            }
            else{
              i = 1;
            }
    }
  }
}

... while this is happening on the background:

void TempMonitorLoop() {
  int b = 1;
  while (b) {
    delay(200);
    TempSensorVal = analogRead(TempSensorPin);
    delay(100);
    temp = ((((TempSensorVal / 1024) * 5) - 0.5) * 100);

    lcd.begin(16, 2);
    lcd.print("Temp is: ");
    lcd.print(temp);

    if (temp <= temparray[0])
    {
      //    lcd.setCursor(0,1);
      //    lcd.print("Cool Temp");
      Serial.print(temp);
      Serial.print(" => Cool Temp\n");
      analogWrite(10, 0);  //analogwrite(PIN,Value)
    }
    else if (temp >= temparray[0] && temp <= temparray[1])
    {
      Serial.print(temp);
      Serial.print("  => Ambient Temp\n");
      analogWrite(10, 50);
    }
    else if (temp >= temparray[1] && temp <= temparray[2])
    {
      Serial.print(temp);
      Serial.print("  => Humid Temp\n");
      analogWrite(10, 100);
    }
    else if (temp >= temparray[2] && temp <= temparray[3])
    {
      Serial.print(temp);
      Serial.print("  => Hot Temp\n");
      analogWrite(10, 180);
    }
    else if (temp >= temparray[3])
    {
      Serial.print(temp);
      Serial.print("  => hot hot Temp\n");
      analogWrite(10, 254);
    }
    setupButtonState = digitalRead(setupButton);
    delay(200);

    if (setupButtonState == HIGH) {
      SetUpLoop();
      b = 0;
    }
    else {
      b = 1;
    }
    delay(5000);
  }
}