As code snippets shown below. Sample I, closes channel inside goroutine; Sample II, closes in an anonymous goroutinue then call same logic

If these two have exactly the same effect, Does it mean chan is passed by reference?

1. Sample I

func Wakeup(wakeupChan chan<- int) {
    defer close(wakeupChan)
    time.Sleep(5 * time.Second)
    wakeupChan <- 1
}

func main() {
    wakeupChan := make(chan int)
    go Wakeup(wakeupChan)
    <-wakeupChan

    fmt.Println("wake up")
}

2. Sample II

func WakeupAnother(wakeupChan chan<- int) {
    time.Sleep(5 * time.Second)
    wakeupChan <- 1
}

func main() {
    wakeupChanAnother := make(chan int)
    go func() {
        defer close(wakeupChanAnother)
        WakeupAnother(wakeupChanAnother)
    }()
    <-wakeupChanAnother

    fmt.Println("wake up")
}