The longest interview process I have ever been through - got through to final Loop stage (at least I hope it was last stage as it was 6.5 hours in total). Given it was quite an investment in time, I felt getting a generic email saying we're moving forward with other candidates at this time after I'd invested at least 2+ days into the interviews (excluding prep/research time). Would have been nice to get more detailed feedback, or a more personalised message.