No — for the retirement extension, immigration requires the 65,000 THB/month to be deposited into the same Thai bank account each month from abroad. Splitting it between two accounts (50k + 30k) won’t meet the rule unless you consolidate into one account before the monthly deposit deadline.
Thanks so much for sharing this—it’s reassuring to hear how things played out, especially after a long wait at immigration. I’ll be arriving in September on the DTV as well (first time using it), so hearing that it went smoothly for you—even without showing the TDAC—is really helpful. Appreciate you posting the details!