Whereas Gen 24 appears as a story of faith and harmony, something went wrong with the family later on: In Gen 27 distrust seems to be dominant. But both ways lead to the goal – the fulfilment of God’s blessings – no matter how the members of the blessed family behave.

Are you sure that   Gen 27 s lead to the goal – the fulfilment of God’s blessings?
What do you  about what  think Dagmar pointed out –
that it seems that Jacov’s blessing turned around

וְהוּא, עָבַר לִפְנֵיהֶם; וַיִּשְׁתַּחוּ אַרְצָה שֶׁבַע פְּעָמִים, עַד-גִּשְׁתּוֹ עַד-אָחִיו.  

ווַתִּגַּשְׁןָ הַשְּׁפָחוֹת הֵנָּה וְיַלְדֵיהֶן, וַתִּשְׁתַּחֲוֶיןָ.  

ז וַתִּגַּשׁ גַּם-לֵאָה וִילָדֶיהָ, וַיִּשְׁתַּחֲווּ;
וְאַחַר, נִגַּשׁ יוֹסֵף וְרָחֵל–וַיִּשְׁתַּחֲווּ.