What is the ruling on the second congregation in the mosque, in which a man comes from outside and prays behind a latecomer (discussion)

The student : All right, regarding the one who prays behind a latecomer. All right, did the latecomer here catch any of the virtue, meaning did he catch some of the two rak'ahs, or one rak'ah, or three of the congregation?

The Shaykh : And, what do you mean by your discussion? You are objecting to the Messenger, meaning.
The student: No.

The Shaykh : Direct your words to the incident, guide you, what do you mean by your words?
Another student: Do you mean the one who prays behind a latecomer, O Shaykh?
The student : Yes, he prays behind a latecomer.
Another student: He means he prays behind a latecomer, O Shaykh.

The Shaykh : ... What is a latecomer? Are you talking about a latecomer?
The student : You asked me about a latecomer who missed two rak'ahs and another person prayed behind him.

The Shaykh : Another person prayed behind him, meaning, what is the description of this other person, my brother?
The student : He came from outside.

The Shaykh : May Allah guide you, we are done with this, may Allah guide you. This one from outside must have prayed with the congregation, did you forget?
The student : I mean, O our Shaykh, now one person stood up ... two rak'ahs.

The Shaykh : I am telling you, you forgot. Tell me yes, tell me no.
The student: No.

The Shaykh : How can it be no? I did not tell you now about this same picture? We told you that this one must be full, rich, he must have prayed with the congregation.
The student : He will be here, he caught two rak'ahs here ...

The Shaykh : And for you, my brother, the one who came and followed him.

The questioner: Yes.

The Shaykh : Did he pray with the congregation? Not the one who prayed with the congregation, but the one who followed him?
The student : The one who followed him did not pray with the congregation.

The Shaykh : All right, guide you, the picture is that Abu Bakr had prayed with the congregation.
The student : All right, and the one who followed him had not prayed with the congregation.

The Shaykh : May Allah guide you, is the matter a debate?! Did you understand that Abu Bakr prayed with the congregation? Say yes.
The student: Yes.

The Shaykh : All right, and this picture you are talking about, did he who prayed with the congregation, this one who followed the latecomer?
The student : No, he did not pray with the congregation.

The Shaykh : So where is the similarity?
The student : All right, excuse me, the one who prayed with Abu Bakr had not prayed with the congregation.

The Shaykh : And if so, my brother, this one who missed two rak'ahs caught some of the congregational prayer.

The questioner: Yes.

The Shaykh : But the fact that that one followed him does not benefit him anything. The one who came from outside and followed him does not benefit him anything, whether he followed him or not. The more a man catches of the congregational prayer, the more his reward will be. The less he catches, the less his reward will be. So, whether one followed him or not, it is the same.
The student : May Allah reward you with good, our Shaykh.

The Shaykh : Welcome, is there anything else?
The student : No, Shaykh.

The Shaykh: All right.