RTX51-Tiny: os_wait2(..) return question

If I call os_wait2(..) as listed in the example below, and if subsequently another task signals MyTask() AND it times out, what will the return value be? The manual states the return value will be a manifest constant identifying the event that restarted the task, but its not clear whether this is only one of the constants or can be a combination thereof.

void MyTask( void ) _task_ 0
{
    ret_val = os_wait2( K_SIG | K_TMO, 25 );

    // what will ret_val be if the task both
    // timed out AND was signaled ???
}