In some cases, the person entering data in the Lexware days used the same band name for glosses of example sentences as for defs, so we have some situations in which a def:seg duplicates data in a quote:seg. I've used this XQuery to identify candidate duplicates for SK to look at:

xquery version "3.0";
declare default element namespace "http://www.tei-c.org/ns/1.0";
declare namespace util="http://exist-db.org/xquery/util";

for $t in //TEI
for $e in $t//entry
let $quoteSegs := for $s in $e//quote/seg where string-length(normalize-space($s)) gt 0 return normalize-space($s),
$defs := for $d in $e//def where string-length(normalize-space($d)) gt 0 return normalize-space($d),
$dupes := distinct-values($quoteSegs[.=$defs])
where count($dupes) gt 0
return concat(util:document-name($t/@xml:id), ' / ', $e/@xml:id, ' : ', string-join($dupes, ' | '))