have there ever been a sweep in both the eastern conference finals and western conference finals at the same time

The Los Angeles Lakers have played in 126 games in Western Conference Finals all-time.

	TEAM	GP	SERIES	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF
1	Lakers	126	Conference Finals	240.4	106.6	43.7	25.9	8.0	5.7	41.1	85.6	48.0	4.5	13.3	33.8	20.6	28.0	73.5	54.4				30,290	13,432	5,507	3,269	875	630		2,891
2	Bucks	15	Conference Finals	240.0	107.7	54.5	25.3			46.6	94.7	49.2				14.5	19.9	72.6	52.0				3,600	1,615	818	380				349
3	Warriors	51	Conference Finals	241.5	107.5	46.8	23.9	9.3	5.3	41.5	89.0	46.6	12.3	31.9	38.5	16.9	22.2	76.1	54.4				12,315	5,482	2,389	1,219	430	242		1,224
4	Bulls	11	Conference Finals	240.0	92.5	43.9	19.6			35.3	83.6	42.2				22.0	30.3	72.7	47.7				2,640	1,018	483	216				233
5	Suns	60	Conference Finals	241.3	106.5	42.0	23.8	6.8	5.8	40.9	85.8	47.7	5.3	14.9	35.6	20.6	26.9	76.8	54.5			14.7	14,475	6,392	2,522	1,426	408	347	882	1,396
6	Trail Blazers	37	Conference Finals	241.4	100.1	41.0	23.1	8.4	4.2	37.7	83.9	45.0	5.2	14.2	36.6	20.0	26.5	75.7	52.4	12.8	28.2		8,930	3,705	1,518	853	311	155		891
7	Nuggets	26	Conference Finals	240.0	110.5	43.0	25.4	7.3	4.1	41.0	89.2	46.0	7.8	22.3	34.8	22.6	28.8	78.4	54.3	13.3	29.7	14.1	6,240	2,874	1,117	660	190	107	367	661
8	Thunder	65	Conference Finals	241.2	103.8	43.4	21.7	8.5	5.9	38.7	84.3	45.9	6.0	17.7	33.7	21.8	28.3	76.9	53.7	13.4	30.0	15.4	15,675	6,750	2,818	1,411	554	383	1,004	1,586
9	Kings	12	Conference Finals	242.1	94.0	40.9	22.6	8.2	4.3	37.0	79.3	46.6	2.9	10.2	28.7	17.1	25.1	68.1	52.0			15.0	2,905	1,128	491	271	98	51	180	282
10	Rockets	39	Conference Finals	240.0	98.7	40.7	21.8	8.3	5.7	36.3	79.8	45.5	6.7	20.0	33.3	19.5	26.2	74.2	54.0			13.8	9,360	3,851	1,589	851	322	222	539	834
11	Spurs	65	Conference Finals	241.2	100.7	42.7	22.7	7.2	5.2	37.8	82.2	45.9	6.3	17.2	36.4	18.9	25.4	74.2	53.9			13.8	15,675	6,546	2,773	1,475	469	339	896	1,392
12	Mavericks	34	Conference Finals	240.7	104.4	40.7	19.9	7.1	4.5	38.2	83.4	45.9	8.1	22.7	35.6	19.8	24.4	81.2	55.5	11.9	28.8	11.7	8,185	3,549	1,383	677	243	153	399	709
13	Jazz	33	Conference Finals	241.5	96.7	39.3	22.7	7.5	4.9	35.2	76.8	45.9	3.5	10.4	34.0	22.8	29.9	76.1	53.8	12.2	27.2	13.3	7,970	3,192	1,298	748	247	161	439	817
14	Timberwolves	16	Conference Finals	240.0	101.3	40.6	21.3	6.1	4.2	36.9	82.1	45.0	10.4	29.3	35.7	17.0	21.7	78.4	55.3	10.5	30.1	13.1	3,840	1,621	649	341	97	67	209	365
15	Grizzlies	4	Conference Finals	252.5	87.8	46.0	19.0	7.8	5.8	33.8	88.5	38.1	5.5	15.8	34.9	14.8	22.0	67.0	44.7	16.0	30.0	11.3	1,010	351	184	76	31	23	45	85
16	Clippers	6	Conference Finals	240.0	103.7	42.0	18.7	5.7	3.2	36.5	82.7	44.2	12.0	35.8	33.5	18.7	24.0	77.8	55.6	8.5	33.5	9.2	1,440	622	252	112	34	19	55	97