AKS Ingress Routing Issue With Multiple Hosts - azure

Question

I have an Ingress Controller file in my Kubernetes cluster that looks like such:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: my_ingress_service_name
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/proxy-body-size: 70m
spec:
rules:
- host: some.host.com
http:
paths:
- path: /api/
pathType: Prefix
backend:
service:
name: gateway
port:
number: 4156
- path: /
pathType: Prefix
backend:
service:
name: testpartner
port:
number: 8090
- host: someother.host.com
http:
paths:
- path: /api/
pathType: Prefix
backend:
service:
name: gateway
port:
number: 4156
- path: /
pathType: Prefix
backend:
service:
name: testpartner
port:
number: 8090
When I navigate to any of the hosts (I have this hosted in Azure Kubernetes, with IP Addesses and an A record pointing to my kubernetes cluster) I can successfully see my web application. However, when I try to go to the api route such as
some.host.com/api/someApiController
or
someother.host.com/api/someApiController
I get a 404 not found error. Here is what is returned in the logs:
10.240.0.4 - - [13/Jul/2022:10:22:51 +0000] "GET /api/request/partner HTTP/1.1" 404 0 "-" "PostmanRuntime/7.28.4" 401 0.002 [ingress-basic-gateway-4156] [] 10.240.0.65:4156 0 0.004 404 7a315bb0a56147e39ef692000dc0adfb
To be clear, it is on purpose that my application can have different hosts pointing to the same Kubernetes service with the same pods, so the different hosts will go the same container, but their APIs will also be a different container, so two containers total.
If it is helpful, here is the nginx config file for the web container (testpartner)
server {
listen 8090;
sendfile on;
default_type application/octet-stream;
client_max_body_size 50M;
gzip on;
gzip_http_version 1.1;
gzip_disable "MSIE [1-6]\.";
gzip_min_length 1100;
gzip_vary on;
gzip_proxied expired no-cache no-store private auth;
gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;
gzip_comp_level 9;
root /usr/share/nginx/html;
location / {
try_files $uri $uri/ /index.html =404;
}
}
What am I doing wrong? I have also verified that the gateway is in fact listening to the correct port.