Unreal Interface and parallelization

Hello. It will be very convenient for me to use Unreal Interfaces as a part of parallel task in C++. Is it thread safe task, or I am not able to do that ? If I can’t do that, is there a way to expose anything to BP that can be processed in parallel by CPP ? For example through FRunnable ?

The following link provides a parallelization example (Example) which shows how to launch the C++ task from blueprint.