Despite Jacob got the blessing from his father, did he walk in the blessing?
I think the first question we should treat is, if his mother had not tricked, would he had gotten the blessing?
Now to answer the latter, I will posit a clearer picture with a question; the blessing he got, didn’t he needed the blessing of the angel to fully walk in it? Whatever you get through unholy means; deceit, tipping, bribery cannot take you to the promised land, instead it will slow you down.
Jacob’s presence in Panddan-aram was not by accident, but he was not supposed to spend such a long time there. Because of Jacob’s deceit, he found himself in the wrong location, in a strange land. Hence, the blessing was in disguise not working optimally for him. It took the intervention of the blessing of the angel for him to walk in the reality of his blessing.