Does the trailing spouse requirement for a Non-O retirement visa negate the need for a revenue letter for the second spouse if their partner has sufficient income?

In the case of a Non-O retirement extension visa, one spouse can provide a proof of income letter from the Canadian embassy/consulate. The second spouse, as a trailing spouse, does not need a separate letter if they are married to the primary applicant. However, immigration may still require the second spouse to show sufficient funds, which could involve having a joint account. It is important to note that for the joint account to be accepted, it typically needs to show double the required amount (1.6 million baht for one person) to qualify for the retirement extension.