WASHINGTON — Speaker Nancy Pelosi’s motorcade was winding through Jerusalem on Wednesday, en route to a state dinner hosted by the president of Israel, when she placed perhaps the most important call of her day — to Representative Adam B. Schiff, the man leading the charge to remove President Trump from office.

On the other end of the line, 5,900 miles away, Mr. Schiff, the top impeachment manager, was preparing to stride into the Senate chamber to begin arguing the House’s case, and the speaker wanted to compare notes before she slipped into a gathering of world leaders.

Ms. Pelosi’s role in the impeachment of Mr. Trump may be formally over, but by her own design, the matter is not out of her hands. Even in her absence from the Capitol this week, as the speaker traveled through Poland and Israel in remembrance of the 75th anniversary of the liberation of Auschwitz, she had her hand firmly on the tiller of the prosecution of the president.

In many ways, Ms. Pelosi is the eighth, largely unseen manager of the Democrats’ case.

She selected the group of seven House impeachment managers from among her closest and most loyal advisers, placing Mr. Schiff, the California Democrat and trusted protégé whom she privately calls “the general,” at its helm. Ms. Pelosi has dispatched her handpicked House general counsel to sit at the table inside the Senate chamber, with the prosecutors acting as her eyes and ears. She reviewed all the managers’ written briefs before they were filed. And the multipronged media campaign to make the case for Mr. Trump’s removal is being run out of her office, by her communications director and other staff.