[xsl] XQuery alternative ⁓ map | XSLT 2.0 || 3.0

    Stage four execution:

let $m := c:mM($c)
let $h := c:style($t, $c) => c:hM()
return
let $b :=
<b>
    <m>{ $m - $h }</m>
    <h>{ $h - $m }</h>
    <e>
        {  
        let $e := <e>{ $m + $h }</e>
        for $r in $e//*:map/*:entry[count(*:value) gt 1]
        return
        <r>
            <id>{ $r/@key }</id>
            {
            (
            if (map:get($m, $r/@key) eq map:get($e, $r/@key)) then
            <mE>{ map:get($m, $r/@key) }</mE>
            else (),
            if (map:get($h, $r/@key) eq map:get($e, $r/@key)) then
            <hE>{ map:get($h, $r/@key) }</hE>
            else ()
            )
            }
        </r>
        }  
    </e>
</b>
return
    xslt-invoke("b.xsl", $b)


   during which produces below in-memory $b.

<b>
    <m>
        <map:map>
            <map:entry key="/d.xml">
                <map:value>FA</map:value>
            </map:entry>
        </map:map>
    </m>
    <h>
        <map:map>
            <map:entry key="/d.xml">
                <map:value>FE</map:value>
            </map:entry>
        </map:map>
    </h>
    <e>
        <r>
            <id>/d.xml</id>
            <mE>FA</mE>
            <hE>FE</hE>
        </r>
    </e>
</b>

    I then transform the resulted $b with XSLT ( <m>, <h> and <e> is in 
different format).

    The dynamic transformation of <m>, <h> and <e>  in XQuery becomes 
cumbersome. How realistic is that I can have XSL equivalent (the 
matching/binding aspects before xslt-invoke modules)? I can pass the map node 
one-at-a-time to the XSLT processor. Can two map nodes be called each other in 
XSLT??
 
    The logic of the XQY is:
  <m> (mechanic model) is the sequence of difference of keys (<id>) in $m while 
not present in $hM map. <h> (heuristics classification) vice versa.   <e> is 
the sequence of bias error (<mE> has the upper hand over <hE>), in essence, 
match & merge in a map.

    Even better, if this can be done in XSLT way.
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