Except they are lampstands,
as is evident by the Revelation's interpretation thereof as congregations.
The two witnesses cannot be simply and literally one single man.
Plus,
they are also olive trees,
and in Zechariah we find that olive tree as being Israel.
So an olive tree is a nation.
The two lampstands are congregations,
and they are of two "nations",
one being from among the Jews,
the other from among every nation and language of the Gentiles.
The Body of Christ is made up of believers from among these two types of peoples,
from among the Jews,
and from among the Gentiles.