From the time you mentioned, after landing, you need to first check the queue to see if it's too long. If it is, you should find an immigration officer and explain to them that you have limited time, offer to pay for expedited processing, and then proceed to the domestic flight entrance to get your boarding pass and go through security. Your time is very tight, so after landing, you can also check if there is a special channel for connecting flights. I don't remember seeing one, but that doesn't mean it doesn't exist ?

International arrivals transfer to domestic flights through the transfer channel, with a separate immigration counter. Last November, I had the same experience and felt that there were very few people, but I didn't pay attention because I had already applied for a sticker visa in advance. Now the Thai consulate's official website has opened up the option for electronic visas on arrival, so I don't know if there will be any delays in processing upon arrival due to the different visa types. When I went to Bangkok in April this year, I also had an electronic visa on arrival, but there was only one counter for electronic visas on arrival compared to numerous counters for regular visas, and there was no advantage at all. I had to wait in line for an hour and a half, which was very frustrating. So I'm not sure if the electronic visa on arrival will work well for the first entry into Bangkok this time. Another issue is that my departure ticket has a through check-in for the final destination in Phuket, so my poor memory is also a disadvantage. If I can clearly remember that the departure ticket is for two separate flights, it is very likely that I can breeze through the immigration counter for the transfer entry with the electronic visa on arrival. International through flights rarely take this route. Most groups either have a layover at the first destination or opt for a high-priced direct flight. Otherwise, they won't make enough profit to cover the charter fee.