Can SpeechRecognizer and TTS be used during a call?

Right now, I'm developing a small concept where TTS can speak through the microphone on the call and it comes from a human voice.

Yes, there are two posts on this, but for some reason, they're aren't exactly clear, or even answered.

Because of this, I want to know if SpeechRecognizer and TTS actually work during a call. If so, please tell me how.

Could you please clarify your question? Are you asking whether the speech recognizer and TTS work during a call?

yes, specifically that.

TTS and Speech Recognizer components in MIT App Inventor are not reliable during phone calls due to Android OS restrictions.