The Daily Mail (U.K.) reports former President George W. Bush is donating to the reelection campaigns of RINO Republicans Liz Cheney (R?-WY) and Lisa Murkowski (R?-AK). I'm not sure who would be surprised by these actions.
I fully expect Bush 43 to actively help every anti-Trump Republican running in 2022. Trump never much disguised his lack of respect for Bush's meager accomplishments, which look even worse in hindsight than they did at the time.
Human nature suggests 43 would reciprocate in kind. In terms Finley Peter Dunne popularized, "Politics ain't beanbag" but is played for keeps.