  We studied two objects identified as a Cataclysmic Variables (CVs) with
periods exceeding the natural boundary for Roche lobe filling ZAMS secondary
stars. We present observational results for V1082 Sgr with 20.82 h orbital
period, an object that shows low luminosity state, when its flux is totally
dominated by a chromospherically active K- star with no signs of ongoing
accretion. Frequent accretion shut-offs, together with characteristics of
emission lines in a high state, indicate that this binary system is probably
detached and the accretion of matter on the magnetic white dwarf takes place
through stellar wind from the active donor star via coupled magnetic fields.
Its observational characteristics are surprisingly similar to V479 And, a 14.5
h binary system. They both have early K-type stars as a donor star. We argue,
that similar to the shorter period pre-polars containing M-dwarfs, these are
detached binaries with strong magnetic components. Their magnetic fields are
coupled, allowing enhanced stellar wind from the K star to be captured and
channeled through the bottleneck connecting the two stars onto the white
dwarf's magnetic pole, mimicking a magnetic CV. Hence, they become interactive
binaries before they reach contact. This will help to explain an unexpected
lack of systems possessing white dwarfs with strong magnetic fields among
detached white + red dwarf systems.
