Thank you for your reply. I think this is what you were asking for:-
Last few paragraphs of chapter
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<p class="calibre4">Prospero took no interest in courtesy. He simply turned, opened the door, and left the room, leaving all the farewells to his companion. Caliban had to hurry just to keep up with him.</p>
<p class="calibre4">Fredda watched them go, and found herself once again wondering about Prospero. She did not understand what went on behind those glowing eyes. There was something not quite right about a robot that—that secretive. She shook her head as she crossed the room. Not much point in worrying about it now. She sealed the door shut behind them and scrambled the keypad. Only she and Caliban and Prospero knew the door's keypad combination.</p>
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<p class="calibre4">And there were times she thought seriously about taking at least one name off that list.</p>
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First few paragraphs of next chapter
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<meta name="generator" content="http://calibre-ebook.com"/>
<title>Utopia</title>
<meta name="author" content="Roger MacBride Allen"/>
<meta name="creation-time" content="2019-2-23"/>
<meta name="revision-time" content="2022-9-6"/>
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<h1 id="calibre_toc_4" class="calibre2">Chapter 2</h1></div>
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<p class="calibre4">Caliban followed Prospero down the tunnel. It ran for about a hundred meters, and deposited them at the base of a ravine that was otherwise quite inaccessible to the house. Their aircar was hidden there.</p>
<p class="calibre4">"I would like to know what all that was about," Caliban said as they emerged from the tunnel into the cool of the evening.</p>
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The last paragraph in the first chapter beginning 'And there were times' should just be on a new line and not a new screen. I notice there is a class=S1 line before it but don't understand html so not sure what it is. However, I have removed that line in the editor and the one above it and tried again but this still shows on a new screen. Also, I edited the panose line as suggested but it made no difference to the display.