Certainly there is a difference between
There is a man such that all week it has been the case
that John hits him.
All week it has been the case that there is a man that John hits.
=At no time during the week has it been false that there is a man
that John hits.
I would have thought that
la djan cu darxi lo nanmu ze'a le jeftu
la djan cu darxi ze'a le jeftu lo nanmu
would respectively be the ways to express the two meanings. But I may
be wrong -- afaik, this precise point has never been discussed before.