<s>[INST] Here is the code:
```
private async Task OnStartAsync()
{
    await Task.WhenAll(
        Connections.Instance.OnServiceBusConnectionEstablishedAsync(),
        Connections.Instance.OnServiceBusNamespaceAvailabilityAsync()
    );
}
```
Why can't I use `await` directly for `Connections.Instance.OnServiceBusConnectionEstablishedAsync()`?[/INST]