Follow up on this M.Y. question.
וַיִּשְׁלַ֨ח יַעֲקֹ֤ב מַלְאָכִים֙ לְפָנָ֔יו אֶל־עֵשָׂ֖ו אָחִ֑יו אַ֥רְצָה שֵׂעִ֖יר שְׂדֵ֥ה אֱדֽוֹם׃
And Jacob sent messengers before him to Esau his brother unto the land of Seir, the field of Edom.
For some reason, Ya'akov feels a need to discover if his brother Esav still wanted to kill him. As we see, a few verses later, Esav was heading his way with an army of 400 men and this frightened Ya'akov. He prays, divides his family, and prepares for war.
I assume that Ya'akov knew about the condition that Esav made regarding killing him, i.e., that Esav would wait until Yitzhak died. So, prior to sending messengers to Esav, why didn't Ya'akov send messengers to his hoime to inquire if his father was still alive?