“The Pennsylvania legislature sent Pence an official document advising Pence not to accept the PA electors.”
No, the PA Legislature did not send any letter to Pence or Congress.
There are 253 legislators in PA, 53 State Senators and 203 in the PA House of Reprsentatives. There was an initial letter sent that was (supposedly) endorsed by 75 Republican members of the PA legislature. PA Republicans sent a second corrected letter endorsed by 64 Republican State Legislators saying that the first letter was in error as far as the number of Republicans who endorsed it.
Either way, whether it was 75 signatures or 64, the number of members of the PA legislature who endorsed the letter was fewer than 1/3 of the total members of the PA Legislature.
I haven’t seen where any state legislature met and voted to recall a slate of electors or electoral ballots in the 2020 election.
The Pennsylvania State Senate has sent a letter to the United States Congress where they listed a number of concerning issues and voter “irregularities” related to the November election. Near the end of their letter, the Pennsylvania State Senate asks the United States Congress to delay certification of the Electoral College to allow due process as they “pursue election integrity in our Commonwealth