Looking on the internet deeply has found these results:

involved in heated discussion is the most popular phrase on the web.

erupt in heated discussion 11 results on the web	involved in heated discussion 14,970 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Today's debate has been preceded by heated discussions over the past few days. it was a little heated discussion. Our understanding is, it was rather a heated discussion. Initially, we had a very heated discussion on this subject. Someone in a heated discussion down there, I guess. There is heated discussion about Amendment No 6, which was accepted in Committee by a small majority. No doubt we shall have the occasional heated discussion this autumn. I might have a heated discussion with somebody.	Our understanding is, it was rather a heated discussion. Initially, we had a very heated discussion on this subject. I might have a heated discussion with somebody. it was a little heated discussion. Today's debate has been preceded by heated discussions over the past few days. There is heated discussion about Amendment No 6, which was accepted in Committee by a small majority. No doubt we shall have the occasional heated discussion this autumn. Someone in a heated discussion down there, I guess.

erupt in heated discussion

11 results on the web

involved in heated discussion

14,970 results on the web

More popular!

Today's debate has been preceded by heated discussions over the past few days.
it was a little heated discussion.
Our understanding is, it was rather a heated discussion.
Initially, we had a very heated discussion on this subject.
Someone in a heated discussion down there, I guess.
There is heated discussion about Amendment No 6, which was accepted in Committee by a small majority.
No doubt we shall have the occasional heated discussion this autumn.
I might have a heated discussion with somebody.

Our understanding is, it was rather a heated discussion.
Initially, we had a very heated discussion on this subject.
I might have a heated discussion with somebody.
it was a little heated discussion.
Today's debate has been preceded by heated discussions over the past few days.
There is heated discussion about Amendment No 6, which was accepted in Committee by a small majority.
No doubt we shall have the occasional heated discussion this autumn.
Someone in a heated discussion down there, I guess.