Overhead cost synergies from M&A? (Middle Office synergies)

I am working on a case study and modeling out a scenario in which Large Bank A acquires Regional Bank B.

I have included cost synergies from eliminating redundant BO positions (IT/Legal/Compliance) and executive management severance packages etc. but I am unsure how I should account for synergies from MO functions being eliminated such as Credit Risk, Treasury, etc.

Are these positions usually eliminated as well? Can anyone provide insight?

(I do not have extensive M&A exposure)

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Overhead cost synergies from M&A? (Middle Office synergies)

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Overhead cost synergies from M&A? (Middle Office synergies)

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