使用嵌入式类型的结构化类型-GO

Question

In the below code:

package main

import "fmt"

type People interface {
    sayHello()
    getDetails()
}

type Person struct {
    name        string
    age         int
    city, phone string
}

// A person method
func (p Person) sayhello() {
    fmt.Printf("Hi, I am %s, form %s
", p.name, p.city)
}

// A person method
func (p Person) getDetails() {
    fmt.Printf("[Name: %s, Age: %d, City: %s, Phone: %s]
", p.name, p.age, p.city, p.phone)
}

---

Person is structurally typed with People, because it implemented behavior of People

For the below code:

type Speaker struct {
    Person     // type embedding for composition
    speaksOn   []string
    pastEvents []string
}

func main() {
    obj1 := Speaker{Person{"aa", 23, "ww", "234"}, []string{"aa", "bb"}, []string{"dd", "ee"}}
    obj2 := Speaker{Person{"aa", 23, "ww", "234"}, []string{"aa", "bb"}, []string{"dd", "ee"}}
    obj3 := Speaker{Person{"aa", 23, "ww", "234"}, []string{"aa", "bb"}, []string{"dd", "ee"}}
    peopleList := [...]People{obj1, obj2, obj3}
    obj1.getDetails() 
    obj1.sayhello()
}

Why obj1.getDetails() is getting resolved? Is it because, Speaker type has embedded Person type and Person type is structurally typed with People interface type?