help needed -- Combining the output of an email summarizer before it send output through Telegram

After learning from Nate's video (https://www.youtube.com/watch?v=JUx2ZfNfD64), I am building a simplified version of an email summarizer.

The system should classify the inbox mails between "high", "medium" and "low" prioritiy, summarize them and should provide the output to the user for each category in a single message;

Example:

**High Priority -- 3 mails found**

Mail 1 : Summary ; subject line ; sender detail

Mail 2 : Summary ; subject line ; sender detail

Mail 3 : Summary ; subject line ; sender detail

**Medium Priority -- 2 mails found**

Mail 1 : Summary ; subject line ; sender detail

Mail 2 : Summary ; subject line ; sender detail

**Low Priority -- 1 mail found**

Mail 1 : Summary ; subject line ; sender detail

However, I am not able to combine the summary of all types of mail into one, so that a single message can be sent to the user through telegram. (currently each mail and its summary is being sent in a separate message in telegram).

Need help how to do that.

Attaching my n8n workflow here:

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