Has anyone got these two cards to coexist in a DOS 6.2 machine with a PnP BIOS?

There is some sort of resource conflict here that I can't pin down. I would like to have them both installed so that I can use the Soundscape to drive my MT-32 and have another General MIDI option without the problematic emulation that aweutil provides.

These cards both work together in Windows Me using the same resource settings as below without any issues:

BIOS Settings: PnP OS = Yes
IRQs 5,7,9 set to Legacy ISA
DMAs 1,3,5 set to Legacy ISA
ACPI = Disabled

SB 32 CT3670 settings configured in CTCU:
IRQ7
Low DMA 1
High DMA 5
SB Port 220
Midi Port 300
Adlib Port 388
Awe Port 620

sndscape.ini settings
Port=330
Waveport=338
Ottoport=2000
IRQ=9
SBIRQ=5
JSEnable=false
SBEnable=false

The SB32 works fine and passes all tests in diagnose.exe if the Soundscape isn't initialized.

If the Soundscape is initialized before the SB 32, AWEUTIL /s fails with an "ERR012: AWE32 initialization failed".

If the Soundcape is initialized after the SB 32, both cards will initialize successfully, but the SB32 stops working. The Soundscape will play MIDI, but games will no longer detect the Soundblaster and neither sound effects nor music will work. diagnose.exe cannot set the base port of 220, which doesn't make sense because I have SBEnable=false.

I tried swapping IRQs (5 <-> 7) and got the same behavior. I also tried using IRQ 9 for both the IRQ and SBIRQ in sndscape.ini.

I tried both opening and closing MFBEN jumper on the CT3670.

Any ideas?

Thanks.