SHIELD Developer interview questions

Got the call by the HR and discussed previous experiences and tech stacks. The call was fine and scheduling for the interview was rather okay, given that I was overseas. Then the horror began. The recruiter did not send the invitation to the video call, and I almost presumed the interview had been called off. Only before 3 minutes into the meeting, I had to call him up if the interview is still happening and he rushed everything. The second interview was rather okay except for the fact that I could not prepare much ahead. The rejection email letter came two weeks later to which I followed up for the feedback. And as expected, there is no response. As a company, I believe there is a lot of room to improve as to how you schedule interviews and all that and I felt horrible to be left in the dark just because the recruiter did not communicate properly.

first interview was basically talking about previous experience and general technology used with two engineers. second interview, i get to meet more people (CEO, CTO, 1 engineer) was asked about how would i identify a bug and deployment process. and shortly after, i get an email stating that i did not meet their requirement and they did not specify what was missing. what a waste of time