question after the interview by me. can you tell what kind of projects are you working on. interviewer gave some vauge answer and asked to look at their publications

what is the difference between rnn and lstm. answer by me lstm has a extra forget Gate to implement rnn can't remember long context and theoritically lstms can remember all the relevant history even if it's very far away. he said it's a vauge reply then interview asked about demnishing gradients which I explained , and he asked lstm vs rnn which one handle the dimnishing gragient problem better. for which I replied lstm to which he said you should have told this in lstm vs rnn at this point I was really disappointed with his knowledge , tone and attitude . but what to do he was the interviewer