The Suggestion spell has a verbal component, and is described as :
You suggest a course of activity (limited to a sentence or two) and magically influence a creature […] that can hear and understand you.
The Subtle Spell metamagic allows a sorcerer to cast a spell without any somatic or verbal components.
Is the sentence used to cast the spell a part of its verbal component?
Using Subtle Spell, can a sorcerer cast Suggestion without speaking at all?
If no, would it allow them to just say the sentence in a conversational tone?
Would the target, or bystanders, notice the spell being cast?
What would be the result of combining Suggestion and Subtle Spell?