My 2 cents after reading the thread and based on my limited understanding: even though form 1040 does not seem to be linked to any fields on form 5471, it seems there are fields on 1040 that might depend on information on 5471, such as dividends earned from net income of a foreign entity the taxpayer is a shareholder of. Therefore, even though someone could use turbo tax to prepare the 1040, caution should be taken to capture on it any related data from other forms.
