How does Rep. Devin Nunes statement vindication Trump's accusation that Obama had wiretapped him?

In the news, Rep. Nunes informed Trump that conversations between his transition team and Russian officials may have been recorded. In response, Trump announced that he felt partly vindicated for his accusation of Obama. I don't understand why. Trump's accusation was that Obama ordered wiretapping on Trump Tower during the presidential campaign. Nunes remarks were about the Trump transition team which was after the election, not during the campaign. Furthermore, Nunes never mentioned Obama as being responsible for ordering it. Lastly, Nunes stated the target of the surveillance was the Russian officials and not on the transition team members themselves. Whether Nunes was right to inform Trump before informing the House Intelligence Committee is another question entirely.