give someone the benefit of
give (someone) the benefit of (something)
To explain something to someone in great detail, often when doing so is unwelcome or unappreciated. Yes, Aunt Ida was so kind as to give me the benefit of the whole story of how she bought peaches by mistake.
give someone the benefit of— explain or recount to someone at length (often used ironically when someone pompously or impertinently assumes that their knowledge or experience is superior to that of the person to whom they are talking).
1999 Stage Our courses are delivered by 2 current TV personalities who will give you the benefit of their 6 years experience.