Barclays Software Developer interview questions

One big assessment 1h coding challenge (easy and easy/medium, checksum etc) Basic maths -> reading graph data, concluding evidence, percentage increase. Timed analysing data and proving certain points. 100% on coding challenge, but rejected still 2 weeks later.

One call was telephonic and then another call with group of 3 people which was planned to be for an hour but went upto 2 hours 15 mins ! At the end of the interview, I got to know that the decision would be made in a week time , but its bern a month and still not heard from them