If else issue with arrays in batch

I have created two sorted arrays of size n and m with numeric value in a batch file.

FOR /L %%a IN (0,1,!n!) DO ECHO !vector[%%a]!

FOR /L %%a IN (0,1,!m!) DO ECHO !vector2[%%a]! 

This exactly shows the contents of my arrays.

Now I want to write a logic which will print merged sorted array.

SETLOCAL ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION

  set i=0

  set j=0

  set /A totalElements =!n!+!m! 

  FOR /L %%A IN (1,1,!totalElements!) DO (

  if !vector[!i!]! LSS !vector2[!j!]! (

        echo "First list"

        echo !%vector[!i!]%!

    ) else (


        echo "Second List"

        echo !%vector[!i!]%!
    )
  )

So, this if else logic is not working. Any idea where in the syntax I have gone wrong? I guess I am not extracting the value from the array correctly?