He answers questions daily, many of which are rather challenging, so he may feel exhausted by the end of the day.
Here, the final main clause “so he may…” relates to the relative clause immediately preceding it.
The questions are challenging Therefore/So he may feel tired…
Can this occur? An independent clause relates to the dependent clause, rather than the first main clause.
I’m sure it is o.k. but perhaps not elegant??
Ta
