Microcontroller USB clarification

[electronicsLearner77]

I am referring to an NXP microcontroller which supports USB 2.0 OTG, i understood that OTG supports both as host and device. So, for the hardware board design, i need to provide connector of USB Type B for it to work as device

and also of USB type A connector for it to work as host

Is my understanding correct?

What happens if both Type A and Type B are connected at the same time? I need to do protection?

 

[Nanren888]

The devices I have used that do this, such as my phone or a pi, have a single connector and you use a cable to adapt when you want OTG. This, way it is one at a time.
.
Not that many devices use "B" anymore.