Slave BFM not responding

Alright guys. So I've got a custom IP Avalon MM Master and I'm trying to check that it is implementing the avalon interface correctly. I've got it set up in a simulation with a slave BFM but while the signals seem to be going across to the BFM, it isn't responding... at all. I want to make sure I'm calling the APIs the correct way. Below is some simplified code showing the BFM APIs relative to other stuff. Note that this is a non-bursting simple setup so going between the two we only have address, read data, write data, byte enable, read, write, wait request (going off memory but I think thats right). I was expecting to see the slave assert wait request, pausing the transaction and then send back data (for the read), but I'm not seeing ANYTHING from the slave.

`timescale 1ps/1ps
`define VERBOSITY VERBOSITY_INFO
`define BFM dut.slave
module SimScript();
  import verbosity_pkg::*;
  import avalon_mm_pkg::*;
  //stuff
  initial begin
  set_verbosity(`VERBOSITY);
  `BFM.init();
  
  //Write Process
  //prepare a BFM response to a stimulus
  `BFM.set_response_request(REQ_WRITE);
  `BFM.set_interface_wait_time(1,1);
  `BFM.push_response();
  //stimulus from custom IP goes out
  while(`BFM.get_response_queue_size()!=1)
    @(posedge clk);
  `BFM.pop_command;
  //this no information attempted to pull from BFM for write
  //Read Process
  //prepare BFM response
  `BFM.set_response_request(REQ_READ);
  `BFM.set_response_data(32'h01234567,0);
  `BFM.set_interface_wait_time(1,0);
  `BFM.push_response();
  //stimulus heads out
  while(`BFM.get_response_queue_size()!=0)
    @(posedge clk)
  `BFM.pop_command;
  RecievedData = `BFM.get_command_data(0);
endmodule