[seqfan] Number-words chain (and necklace)

[Eric Angelini]

Hello SeqFans,

30-1-60-4-6-2-707-50-711-52-11-42-7-40-9

This number-chain has 15 different elements.
I'm unable to produce a longer chain knowing
that no number - when written in English - is
allowed to share a letter with the next one.

We have thus :

THIRTY
ONE
SIXTY
FOUR
SIX
TWO
SEVEN HUNDRED (AND) SEVEN
FIFTY
SEVEN HUNDRED (AND) ELEVEN
FIFTY-TWO
ELEVEN
FORTY-TWO
SEVEN
FORTY
NINE

Is it possible to build a longer such chain?
What about the longest necklace?

Best,
É.