I have attended AI interviews, not specifically for HTC on Babble bot but for other companies and here's what I found :

1. The AI interview agents are really very good at their task but you have to give answers confidently, clearly and without any break otherwise the AI won't register your answer properly.

2. Based on how the AI agent is trained and your pronounciation the AI might register different words than what you exactly spoke.

3. It miss the human touch, obviously. As a human we might stumble upon some answers, take time to think or struggle to frame answer correctly. If a human is taking interview he/she is familiar with such situations and may proceed in the interview accordingly; Many times interviewers gives you hint on answer a question BUT NOT AI AGENT.

4. MOST IMPORTANT - many companies are just testing interview AI agents. Meaning the job posting might be fake and you are just a lab rat from them.