Expected Behavior of *set_stop_time_in_pcm_frames()

[cdigit]

What is the expected behavior of set_stop_time_in_pcm_frames()?

Context
I want to make a sound start at a specific position within the sound when it starts
and Make the same sound stop at a specific time, relative to the engine time.

Code Example (to illustrate context)

void play(){
    ma_engine_set_time(&g_engine, 0);
    ma_sound_seek_to_pcm_frame(mySound, 0);
    ma_sound_seek_to_pcm_frame(mySound,           ma_engine_get_sample_rate(&g_engine) * 2);
    ma_sound_set_stop_time_in_pcm_frames(mySound, ma_engine_get_sample_rate(&g_engine) * 2);
    ma_sound_start(mySound);
}

Expected Behavior (my assumptions)

No sound should be heard because I sought (seeked?) to the same position that I am stopping.
The *seek_to*() and *set_stop*() frames are relative to the engine and the engine has been reset to zero, so everything is starting from zero and *seek_to*() and *set_stop*() have the same values, so no sound should be heard.

Actual Behavior

I am hearing sound. Both ma_sound_seek_to_pcm_frame() and ma_sound_set_stop_time_in_pcm_frames are modifying the sound playback (trimming the start and end), but not in the way I expect when using them together like this, which is to hear no sound. It seems like *seek_to*() may not be relative to the engine, but even if it isn't the sound and the engine starts at 0, so something is not adding up.

[cdigit]

[Update: confusion resolved] Writing this helped me see my confusion. This little graphic explains that there is still audio to play (3) after the seek_to position and that is what I'm hearing. I would have to move the start time up to hear no audio