Adding CarPlay support for audio app below iOS14

I am Trying to build a audio app which supports from iOS 13 and above. iOS 13 - com.apple.developer.playable-content, iOS 14 - com.apple.developer.carplay-audio I have added above entitlements to support my app for below and above iOS 14 version.

	<key>UIApplicationSceneManifest</key>
	<dict>
		<key>UIApplicationSupportsMultipleScenes</key>
		<false/>
		<key>UISceneConfigurations</key>
		<dict>
			<key>CPTemplateApplicationSceneSessionRoleApplication</key>
			<array>
				<dict>
					<key>UISceneClassName</key>
					<string>CPTemplateApplicationScene</string>
					<key>UISceneConfigurationName</key>
					<string>CarPlay</string>
					<key>UISceneDelegateClassName</key>
					<string>$(PRODUCT_MODULE_NAME).CarSceneDelegate</string>
				</dict>
			</array>
			<key>UIWindowSceneSessionRoleApplication</key>
			<array>
				<dict>
					<key>UISceneClassName</key>
					<string>UIWindowScene</string>
					<key>UISceneConfigurationName</key>
					<string>Phone</string>
					<key>UISceneDelegateClassName</key>
					<string>$(PRODUCT_MODULE_NAME).PhoneSceneDelegate</string>
				</dict>
			</array>
		</dict>
	</dict>
</dict>
</plist>

This is how I added UIApplicationSceneManifest but problem here is that when we launch app on below ios14 im getting "Unable to Connect Error"

But if i add maps support entitlements i can able to render Grid or list templates. So My question is how to add support for below and above iOS14 versions for audio app in same code base.

Thanks In advance.