We had our interview Dec 8 and it was a combo interview. The IO told us that they are doing combo interviews because of backlogs. Our I-751 was sent on Oct 2020 and it was transferred to NBC and never heard anything else from it until yesterday. He asked only 2 questions about it. If we own a home and what are address was. Then he said it was approved. N-400 was next very simple too. Asked 6 question then read and write a sentence and then approved. The whole interview took about 15 minutes. We did submit a lot of paperwork. Good luck everyone! Glad it’s all over.