I think it's pretty clear that you can't have visitors visiting both governments on the same visit. Simple diplomatic courtesy dictates separate (though equal) visits to both parties. A respectable interlude between visits would be, in my opinon, about three hours. This would provide ample time for one visit to be concluded, and a full transition to the next visit. It's simple logic really...
More than 2,000 migrants threaten to break out of Hungarian camp (Reuters)
from the article: Israel to snub foreign envoys who meet with Hamas ministers