No it doesn't, and no they didn't. Read the next verse:
John 6:54 "Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day.<p> </p>55 For my flesh is meat indeed, and my blood is drink indeed.<p> </p>56 He that eateth my flesh, and drinketh my blood, dwelleth in me, and I in him.<p> </p>57 As the living Father hath sent me, and I live by the Father; so he that eateth me, even he shall live by me."
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You should be aware that in the verses prior to that, he had been addressing the crowd in parable mode, but then, you see he cut to the chase and made himself verily, verily crystal clear.
Again, what strikes me is that he said all that BEFORE the Passover observance commonly referred to as the "last supper." Long before. Of how much time elapsed between the two events, I am uncertain. The Passover incident was merely a reminder and a full practice-run for the disciples of what they were expected by him to do: eat his flesh and drink his blood.
So, it is obvious that he concisely made himself perfectly clear and we do especially get this point when we continue in our reading...:
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60 Many therefore of his disciples, when they had heard this, said, This is a hard saying; who can hear it?
61 When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?
Well yes, wouldn't *you* be offended at first if you were just informed that you were required to eat your loved one and drink their blood?
Time for a 7 minute commercial break... "So you've decided to eat your loved one"