DC usually fast which is where i got my DTV, maybe go on your dashboard to see if new notifications , sometimes they request for extra documents. Check your junk mail box since sometimes the notifications go there
then why dont you apply for DTV? Requirements are lower (500k baht) and only need one time statement from bank in your own country. 5 year validity is even better than retirement visa( need yearly renewal)
Survival bias. Rejection may be more often than you think. People get rejected probably wont post their experiences here since its probably their own fault.