COM STA thread

Hello everyone,

For COM STA, there is a owner thread. My questions is, when the thread needs to communicate with components in other apartments, whether the owner thread will be blocked?

My current experiment and study results is, the STA owner thread is not blocked, it is the RPC thread (which is used for underlying communication with other apartment to send method call and retrieve method return result) will be blocked. But I am not 100% sure about this. Any comments or ideas?

thanks in advance,
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