It was announced at yesterdays game v Crawley that the game was Mike Flynn's 100th in charge. This was also stated on twitter.
However, i looked through the three seasons that Flynn has fully / partly been in charge. I did this on Friday after seeing the notice on the Newport County twitter. I clearly make it that the Forest Green game on Boxing Day was County's 100th competitive match since, and including, Crewe away 2016/17. The 2-1 victory at Crewe was Flynn's first game in charge. So, did Flynn have a one match ban from the touchline at some point and thus didn't take charge of one game? Does anyone know?

Season 2016 / 17:
League only:
Crewe A
Morecambe A
Blackpool H
Luton H
Pompey A
Crawley H
Exeter A
Yeovil H
Plymouth A
Accrington H
Carlisle A
Notts County H

TWELVE GAMES.
---------------------------------------------------------

Season 2017 / 18:
League:
46 games.

FA Cup:
Walsall H
Cambridge H
Leeds H
Spurs H
Spurs A (replay)

League Cup:
Southend A
Leeds A

EFL Trophy:
Swansea U21's H
Forest Green A
Cheltenham H
--------------------------------------------

Season 2018 / 19:
League:
23 (23) games, up to and including Boxing Day fixture v Forest Green.

League Cup:
Cambridge A
Oxford H

FA Cup:
Met Police A
Wrexham A
Wrexham H (replay)

EFL Trophy:
Swindon A
Chelsea U23's H
Plymouth H
Cheltenham A

THAT'S 100 GAMES UP TO, AND INCLUDING, FOREST GREEN ON BOXING DAY.

I think your stats are correct Reebok, well researched. I can't remember Flynny having a touchline ban since he took over. There is an Argus article concerning Feeney, who was banned and kept in touch by mobile phone with Flynny, who was Coach at the time, during the Carlisle game in February 2016. Bit off the point I know.