Marc RowanKevork Djansezian/ReutersMarc Rowan on Wednesday addressed succession at private-equity giant Apollo Global.The remarks come weeks after he interviewed for a potential Trump Cabinet position.He flagged several key heads of businesses and the "next generation" of talent.After Apollo CEO Marc Rowan's whirlwind candidacy for Trump's Treasury Secretary gig, questions remain about what could become of the firm after Rowan's eventual exit.