A question about dummy load

Hi to all

In  a do***ent from Roy Lewallen, we read this:

When  a  balanced  antenna  is  fed  with coaxial  cable (Fig.1),
the  outside  of  the  ****eld appears  as an extra, separate
conductor  connected  to the  right side of  the  antenna  at  the
feed point. (page 157. What  They  Do And  How  They  Do  lt)

My question is this: Can we say the same thing for a dummy load (i.e
can we replace the words 'balanced antenna' with 'dummy load'?) so the
dummy load would 'see' three conductors?

We are trying to explain why some dummy load/Tx line systems radiate.
Perhaps, tthe current outside the coax (common mode current) exits,
while being very small, so the radiation could come from a leaking
coax... ?

Thanks de Pierre VE2PID