I am facing one issue to pass body from aura component to lwc.
optionGroup.html
<template>
<h1>Child LWC</h1>
<slot></slot>
</template>
OptionGroupLWC.html
<template>
<h1>Parent LWC</h1>
<slot></slot>
<c-option-group>
<p>child slot</p>
</c-option-group>
</template>
OptionGroupExample.cmp
<aura:component implements="flexipage:availableForAllPageTypes">
<c:optionGroupLWC>
<p>Parent Slot</p>
</c:optionGroupLWC>
</aura:component>
Output:
Issue is <p>Parent Slot</p>
does not render from aura component to slot in lwc.