Your use of "discussion" disguises what really happened. This was not a high school social studies class.
Trump's "discussion" with Pence concerned something far beyond the Constitutional duties of the VP -- Trump demanded that Pence reject legitimate electoral votes submitted by state governments and to instead accept illegal "votes" from fake electors. Trump's demands were based on his own fabricated claims that the election was stolen.
Under Article II, Section 1 of the Constitution, the states
alone have authority to name the electors. Neither the President nor Vice President have any authority to select the electors, which is exactly what Trump was "discussing" to use your term.
It wasn't just "discussion" either - Trump orchestrated an entire plan for fake electors to meet in certain states at the same time as the real electors selected by the state governments and to illegally masquerade as the real electors.
Read Paragraphs 9 and 10: