Complex sentence: As German machinations continued, Quisling was intentionally kept in the dark; he was also incapacitated by a severe bout of illness, probably nephritis in both kidneys, for which he refused hospitalisation.
Split into simpler sentences: As German machinations continued, Quisling was intentionally kept in the dark. He was also incapacitated by a severe bout of illness, probably nephritis in both kidneys, for which he refused hospitalisation.