How to print Customer bill and KOT bill separately in one click in php

Below is that the variables of customer bill kot bill which I’m passing it to the view page.
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Here I have used embed tag to get the generated pdf source path.
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After clicking the print button Customer bill and KOT bill is showing with print option separately like the below attachment
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The only thing I need is in One click I need to print both Customer bill and KOT bill but it should be printed separately How can I acheive this by php codeigniter