Yevamot 41: Elijah the Prophet to Clarify Which Woman Is Which

The ramifications of chalitzah for the relatives of the pair doing chalitzah. Also, what happens when a widow awaits yibum or chalitzah, and those other relationships are already getting put into play? Also, the widow must wait 3 months for yibum or marriage, to see if she might be pregnant with her dead husband's child. Why defer betrothal, though? Plus, in the landed area of Yehudah, they may have been involved... And that waiting period is considered necessary for couples of this nature there. Which is also going to be the case for chalitzah. Plus, lest there be confusion over which women is which.