The Rivalry and Purdue's historic/current ranking in college football notwithstanding, doesn't Jeff Brohm deserve to be torched or fired, for his coaching performance, to-date? Consider the following:

On December 5, 2016, Purdue hired Jeff Brohm to become head coach of the football program. Brohm came from Western Kentucky, where he was 30–10 in 3 seasons.[74] Brohm brought instant success to Purdue, success that the program had not experienced since Head Coach Danny Hope. In their game against Michigan, Purdue sold out Ross Ade Stadium for the first time since 2008 in Joe Tiller's final game against Indiana. Brohm finished his first regular season with a 6–6 record, including the first victory over rival Indiana since 2012. Brohm also was able to earn a bowl berth for Purdue, their first since the 2012 season, where Purdue defeated Arizona in the Foster Farms Bowl, 38–35.

In Brohm's second season, Purdue enjoyed perhaps even higher success than their first season, even though the team started the year 0–3. Purdue would eventually finish 6–7, with a second consecutive bowl berth. Purdue defeated three ranked teams in 2018: #23 Boston College (30–13), #2 Ohio State (49–20), and #16 Iowa (38–36). Purdue suffered a lopsided 63–14 loss to Auburn in the Music City Bowl.

In Brohm's third season, Purdue finished 4–8 and failed to achieve bowl eligibility. Purdue's season ended with a 44–41 loss in two overtimes to Indiana in the Old Oaken Bucket game.

source: https://en.wikipedia.org/wiki/Purdue_Boilermakers_football#Jeff_Brohm_era_(2017%E2%80%93present) 

Bonus:

If no B1G CG, we get Purdue or Iowa, instead.