I have a time in a cell, want to minus 2 hrs and add 2hrs to the time and display in excel

I have a time in a cell, want to minus 2 hrs and add 2hrs to the time and display in excel

Example : 02/08/2020 11:00AM So Minus 2hrs and plus 2 hrs next cell must display as 9:00AM-13:00PM

I tried the below formula but displays like 43811.0577893518 - 43811.2244560185 =CONCATENATE(A1-TIME(2,0,0),"","-","",A1+TIME(2,0,0))