Only 1 bonded upstream channel

I have had an issue for years at my apartment where for brief periods my internet connection will just start dying, pings will go erratic, I'll start losing packets, and internet just won't work for 1-3 hours at a time.  It happens as infrequently as once or twice a month and sometimes as frequently as every single night for a couple of weeks.  I suspect that it is weather-related, but I'm not 100% on that and don't want to jump to conclusions.  Anyway, I've finally decided that I need to address this as with working from home, my life and internet consumption has changed dramatically.  Since I've started digging into this on my own, I've noticed that I only have one bonded upstream channel.

 

I have an ARRIS SurfBoard SB6190, I've spoken with comcast support who of course asked me to replace the one splitter I have in my apartment.  I've done so with an Extreme series 2 way splitter, and am still only seeing one upstream channel. 

Can someone confirm for me that I should be seeing more than one upstream bonded channel?  I'm trying to determine how hard I should be fighing for a technician to come out.

 

>>>

Upstream Bonded Channels
Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 kSym/s	35.80 MHz	54.00 dBmV
2	----	----	4	----	16.60 MHz	----
3	----	----	3	----	23.00 MHz	----
4	----	----	2	----	29.40 MHz	----

---

Startup Procedure
Procedure	Status	Comment
Acquire Downstream Channel		Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Configuration File	OK
Security	Enabled	BPI+
DOCSIS Network Access Enabled	Allowed

 

Downstream Bonded Channels
Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Corrected	Uncorrectables
1	Locked	256QAM	42	405.00 MHz	-2.50 dBmV	38.98 dB	0	0
2	Locked	256QAM	43	411.00 MHz	-2.50 dBmV	38.61 dB	6	0
3	Locked	256QAM	44	417.00 MHz	-2.40 dBmV	38.98 dB	0	0
4	Locked	256QAM	45	423.00 MHz	-2.50 dBmV	38.98 dB	0	0
5	Locked	256QAM	38	429.00 MHz	-2.40 dBmV	40.37 dB	0	0
6	Locked	256QAM	39	435.00 MHz	-2.30 dBmV	38.61 dB	12	0
7	Locked	256QAM	40	441.00 MHz	-2.20 dBmV	38.98 dB	0	0
8	Locked	256QAM	41	453.00 MHz	-1.70 dBmV	38.98 dB	0	0
9	Locked	256QAM	33	459.00 MHz	-1.70 dBmV	38.61 dB	6	0
10	Locked	256QAM	34	465.00 MHz	-1.60 dBmV	38.98 dB	0	0
11	Locked	256QAM	35	471.00 MHz	-1.80 dBmV	38.98 dB	0	0
12	Locked	256QAM	36	477.00 MHz	-1.80 dBmV	38.61 dB	0	0
13	Locked	256QAM	1	483.00 MHz	-1.70 dBmV	38.61 dB	0	0
14	Locked	256QAM	2	489.00 MHz	-1.90 dBmV	38.98 dB	0	0
15	Locked	256QAM	3	495.00 MHz	-2.20 dBmV	38.98 dB	0	0
16	Locked	256QAM	4	501.00 MHz	-2.40 dBmV	38.98 dB	0	0
17	Locked	256QAM	5	507.00 MHz	-2.70 dBmV	38.61 dB	0	0
18	Locked	256QAM	6	513.00 MHz	-3.20 dBmV	38.61 dB	7	0
19	Locked	256QAM	7	519.00 MHz	-3.50 dBmV	38.98 dB	2	0
20	Locked	256QAM	8	525.00 MHz	-4.00 dBmV	38.61 dB	2	0
21	Locked	256QAM	9	531.00 MHz	-4.10 dBmV	38.61 dB	9	0
22	Locked	256QAM	10	537.00 MHz	-4.50 dBmV	38.61 dB	2	0
23	Locked	256QAM	11	543.00 MHz	-4.60 dBmV	37.64 dB	0	0
24	Locked	256QAM	12	549.00 MHz	-4.70 dBmV	37.64 dB	1	0
25	Locked	256QAM	13	555.00 MHz	-4.80 dBmV	37.30 dB	3	0
26	Locked	256QAM	14	561.00 MHz	-4.90 dBmV	36.20 dB	1	0
27	Locked	256QAM	15	567.00 MHz	-5.30 dBmV	37.60 dB	4	0
28	Locked	256QAM	16	573.00 MHz	-5.30 dBmV	37.30 dB	1	0
29	Locked	256QAM	17	579.00 MHz	-5.50 dBmV	36.60 dB	4	0
30	Locked	256QAM	18	585.00 MHz	-5.10 dBmV	39.20 dB	5	0
31	Locked	256QAM	19	591.00 MHz	-5.10 dBmV	36.40 dB	2	0
32	Locked	256QAM	20	597.00 MHz	-5.10 dBmV	37.30 dB	1	0