result.cs

var result = await _connectedTCS.Task.FailOnCancel()
    .OnSuccess(async () => await _userStatusTCS.Task.FailOnCancel())
    .OnSuccess(async () => await _profileTCS.Task.FailOnCancel());

result.OnSuccess(() =>
{
    Log.Info("Connecting to the Gateway successful");
    connectedSuccessfully = true;
    RootNode = _profileTCS.Task.Result.Value;
    connectedEvent.Set();
})
.OnFailure((res) =>
{
    Log.Error("Error when connecting to the Gateway " + res.Error);
    connectedEvent.Set();
});