Was only one phone call which i had, they spent the majority of the time explaining what the company does so be prepared with your own research of the company, e.g. looking at previous deals they have done
Was 4 rounds where you meet with multiple people across the company each getting higher up. Everyone asked similar questions but left a lot of time for you to ask your own.
More interviews than average - 5. Very communicative and willing to answer my questions regarding things beside the position. Relatively quick process for an internship offer. Good experience and felt informed the entire time.