It can, using OOB. E.g. returning this as a response: <div id="foo" hx-swap-oob="true">yes</div> <div id="bar" hx-swap-oob="true">possibly</div> will

It can, using OOB. E.g. returning this as a response: <div id="foo" hx-swap-oob="true">yes</div> <div id="bar" hx-swap-oob="true">possibly</div> will make HTMX update both the #foo div and the #bar div already on the page.