Two brothers, Dan and Doug, are charged with robbing a bank and are tried together.  Dan calls their sister Wendy as a witness and elicits testimony that she went to the beach with both defendants on the day of the robbery.  Following direct examination, Doug's lawyer cross-examines Wendy.  He asks her, "The trip to the beach lasted all day, didn't it?"  The prosecutor objects that "counsel is leading the witness."  Should the objection be sustained?  What if Doug were unrelated to Dan and Wendy?

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