Who was the last player with 23 rebounds in an eastern conference finals game on the road?

Giannis Antetokounmpo had 23 boards in Game 3 tied for the most in a road game in the Eastern Conference Finals since Elvin Hayes in 1979.

Interpreted as:
Who was the last player with 23 or more rebounds in an eastern conference finals game on the road?
NAME DATE SEASON SERIES TM OPP REB MIN PTS +/- AST STL BLK 3PM FG% FT% TOV FGM FGA 3PA 3P% FTM FTA PF
1 Giannis Antetokounmpo
Giannis Antetokounmpo
5/19/2019
2018-19
Conference Finals
MIL MIL
@ TOR @ TOR
23
45
12
3
7
1
4
0
31.3
28.6
8
5
16
3
0.0
2
7
6
2 Elvin Hayes
Elvin Hayes
5/9/1979
1978-79
Conference Finals
WAS WAS
@ SAS @ SAS
23
44
15
4
2
1
35.0
16.7
7
20
1
6
5
3 Paul Silas
Paul Silas
4/22/1973
1972-73
Conference Finals
BOS BOS
@ NYK @ NYK
23
49
5
5
22.2
50.0
2
9
1
2
2
Results may be incomplete. StatMuse has complete game-level data for rebounds going back to the 1963 playoffs.

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Western W L PCT GB
1
Thunder Thunder
68
14
.829
2
Rockets Rockets
52
30
.634
16.0
3
Lakers Lakers
50
32
.610
18.0
4
Nuggets Nuggets
50
32
.610
18.0
5
Clippers Clippers
50
32
.610
18.0
6
Timberwolves Timberwolves
49
33
.598
19.0
Eastern W L PCT GB
1
Cavaliers Cavaliers
64
18
.780
2
Celtics Celtics
61
21
.744
3.0
3
Knicks Knicks
51
31
.622
13.0
4
Pacers Pacers
50
32
.610
14.0
5
Bucks Bucks
48
34
.585
16.0
6
Pistons Pistons
44
38
.537
20.0