listagg fail -string too long (4000) need to convert to XML

This code is a small portion of a view creation that develops a perfect answer except that one track_thing_id/thing_id combination exceeds the 4000 byte listagg limitation.  Because that one combination exceeds the 4000 character/byte limitation of listagg, I believe I need an XML conversion.  

    left outer join
           (  select mi8.track_thing_id,
                     listagg (
                            nvl (p.cipher, '')
                         || '-'
                         || mip.kellogg_nur
                         || '-'
                         || nvl (pls.situation, 'Nsitn'),
                         ', ')
                         within group (order by p.cipher)
                         as "thing/sit"
                from ml_track_thing mi8
                     join ml_track_thing_stuff mip
                         on mi8.track_thing_id = mip.track_thing_id
                     left outer join stuffstuff p on p.id = mip.endpr_id
                     left outer join lic_endpr_permit pl
                         on (    pl.endpr_id = mip.endpr_id
                             and pl.house_id = mi8.place_id)
                     left outer join lic_endpr_permit_situation pls
                         on pl.permit_situation_id = pls.id
            group by mi8.track_thing_id
            order by mi8.track_thing_id) spcl

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So what I need from the above code is the XML equivalent..    and I am hoping the above is sufficient  for a resident expert to return the needed SQL..  And would gladly consider any alternative solution to the listagg limitation.

All pointers and suggestions appreciated ..  I have tested, and yes, there is only one combination (out of a large number) that come anywhere close to the 4000 byte limitation, and it clearly does exceed.. It is entirely possible that future data entry could cause additional  track_thing_id/thing_id combinations to exceed the limitation.