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Use of |&

From: goncholden
Subject: Use of |&
Date: Mon, 13 Feb 2023 15:22:01 +0000 
Have been using awk in a bash script.

Have seen the use of "|&" rather than the usual "|".  What is the reason for 
using

"|&" exactly ?

command |& getline info

command | getline info
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