What would the GOP have to do for Coons to lose faith in bipartisanship?

That's a rhetorical question. The Congressional Republicans are now in open rebellion against our constitutional democracy. There is literally nothing his friends in the GOP could do that would undermine Coons' idiotic and dangerous faith in bipartisanship.

Already Distorting Jan. 6, G.O.P. Now Concocts Entire Counternarrative

No longer content to absolve Mr. Trump, (congressional Republicans) concocted a version of events in which those accused of rioting were patriotic political prisoners and Speaker Nancy Pelosi was to blame for the violence.

Their new claims, some voiced from the highest levels of House Republican leadership, amount to a disinformation campaign being promulgated from the steps of the Capitol, aimed at giving cover to their party and intensifying the threats to political accountability.