The ruling against Conway looked very sketchy as the ball had pitched on the center stump and it appeared to be that it would have proceeded to miss the leg stump.

1. Here's why Devon Conway
couldn't review the LBW
decision against Mumbai
Indians

2. Chennai Super Kings were looking
unfortunate so far in their match against
Mumbai Indians at the Wankhede Stadium
as they lost their opener Devon Conway
and Moeen Ali in the absolute first over to
Daniel Sams. Things deteriorated as Jasprit
Bumrah eliminated Robin Uthappa in the
second over of the match.
What was astonishing however was the way
that left-given Conway needed to survey the
choice yet needed to stroll back as the DRS
office was not accessible at that point. The
Wankhede Stadium was confronting some
extreme power issues and because of that
the DRS office was not accessible at that
point.
Indeed, even the throw was deferred as one
of the light pinnacles was additionally
dealing with issues.

3. The ruling against Conway looked
incredibly sketchy as the ball had pitched
on the center stump and it appeared to be
that it would have proceeded to miss the
leg stump.
IPL
Pundits, including previous India skipper
and batting maestro Sunil Gavaskar, were
consistent as they would see it that it was an
unfortunate choice and that the ball would
have missed the stumps.
For Conway, it was a disheartening end as
he was excused for a duck, stopping a run
of three continuous fifties as he scored 85*,
56, 87 in CSK's last three matches.

4. Indeed, even Robin Uthappa needed to
survey his choice as he was struck on the
cushions by Bumrah and given out by the
umpire. Yet, the DRS office was as yet not
accessible. This time however the choice
looked right as the ball had contributed line
and the observers felt that it would have hit
the stumps.
The issue was fixed before the finish of the
second over as educated during the
transmission by pundits.