Cap1's interview process is disrespectful of candidates. It's a backloaded gauntlet of six interviews (mini case & five-round power day) with literally zero feedback upon rejection. Mini case is disproportionately easy relative to power day. Power day (five hour-long interviews in a single day) is comprised of five sequential and diversified looks (mix of creative, behavioral, technical, case-style, etc.), so you have no idea where you went awry if rejected.
I get that Cap1 has a high standard of excellence and can afford to be extremely picky in the current labor market, but asking candidates to go through a months-long recruitment cycle and then leaving them completely in the dark is simply wrong.
Cap1, if you're reading this, stop hiding behind the "guidelines from your risk management team" and provide candidates with the feedback they need to improve. It's the least you can do.