I will tell you a secret though and promise not to tell. The Ran doesn't say what the shmatsa said he said. Look there and see. This a wonder of wonders which will disturb my sleep enough for the next few weeks that you can feel free to call or email at 3:00am and I will answer.
If any scholar reading this can help me you will be amply rewarded. Here is a detailed discussion of the sugya.
Another question - Why is Bein Hashmashos called that? "Between the suns". An odd name for the period between sunset and dark.
