Accounting Q

Hi all -

Trying to think about new D&A post an acquisition...

For example - JCI just acquired TYC. For this question, lets ignore the fact that JCI is spinning their automotive business. Is this the correct way to think about the new D&A? or does acquisition accounting change the legacy TYC D&A?

Legacy JCI D&A + legacy TYC D&A + Deal amortization for acquired intangibles [provided in s-4] = New D&A

Appreciate the help and thanks!