Related Clues:

• "Plus ..."
• Characters in National Socialism to boot
• AKA part
• Along with
• ". . . your point is?"
• Word that creates links
• Word sometimes elided to its middle letter
• Not to mention sample of musical sounds
• ''__ your point is . . .?''
• "Link" missing from 17-, 26-, 53- and 62-Across
• 'Wait, there's more ... '
• Plus, in a sentence
• "Additionally"
• "Before I let you go ..."
• Not to mention the bit of mental soundness