Is possible use the slots without Shadow DOM in vanillaJS?

Question

In the index.html:

<my-component>
    <div slot="some-slot">
        <other-component></other-component>
    </div>
</my-component>

In the my-component.html:

<template>
    <div>
        <slot name="some-slot"><slot>
    </div>
</template>

In the other-component.html:

<template>
    <div>
        <p>Hi!</p>
    </div>
</template>

So, when I would load the index.html I get "hi!", Is it possible?