1)
What is the meaning of "Ad Ko v'Ad Ko"?
1.
Rashi: While the Shali'ach was going to Achav, and he was preparing the chariot.
2.
Radak: While he was preparing the chariot and descending.
3.
Radak citing Targum Yonasan: While he was being zealous and descending.
2)
What is the meaning of "Hiskaderu Avim v'Ru'ach"?
1.
Radak: It became dark due to the clouds; wind is a sign of rain.
2.
Radak citing Targum Yonasan: Shamayim was covered with clouds.