Fine Gael leader Leo Varadkar has said that his party and Fianna Fáil would be conferring to provide responses to the 17 "reasonable and relevant" questions asked by the Green Party.
Yesterday, the Greens asked the two parties questions about their joint document on government formation.
Mr Varadkar said Fine Gael and Fianna Fáil will provide the Green Party with a response in the next couple of days.
"If the Green Party are satisfied with our replies, we'd hope to follow that up with a meeting at leader level, perhaps early next week," Mr Varadkar said.
He added: "Should things go to plan, I’d hope the Green Party might then make the decision to enter formal negotiations with Fianna Fáil and Fine Gael so that we can establish a coalition government with a majority."
Taoiseach Leo Varadkar has said Fine Gael and Fianna Fáil are conferring to respond to a document from the Green Party on Government formation pic.twitter.com/ET9zv9x2CL— RTÉ News (@rtenews) April 24, 2020
Green Party leader Eamon Ryan has said they should be viewed as "key questions" rather than "red lines".
The Greens six-page document included a question on whether Fianna Fáil and Fine Gael would commit to reducing greenhouse gas emissions by 7% every year.
Speaking on RTÉ's Morning Ireland, Mr Ryan also tried to allay concerns expressed by environmental group Friends of the Earth that his party's document did not contain a commitment to ensure the 2015 Climate Act would become law.
Mr Ryan said he would expect it to be introduced in the first 100 days of any coalition, if his party signed-up, he added it was "a given".
He said clarity is required to know the next government is going to change Ireland towards a "greener" country and that scientific advice is heeded.
Mr Ryan said separate to tackling climate change, the two other main aims would be the development of public housing and conversion to a public universal health system.
He said the Fine Gael-Fianna Fáil document was "aspirational", but that was not a bad thing as it sets out a broad outline.
Mr Ryan said for any parties going into government, it takes a couple of weeks to go through the full range of issues.
He said if Fianna Fáil and Fine Gael are going to shift the nature of the economy towards public housing and public health, they need to be specific about how they are going to do that.
Mr Ryan said rather than invest heavily in new road projects, he was calling for more investment in infrastructure for cycling and walking.
Yesterday, Fianna Fáil leader Micheál Martin described the Green document as a "comprehensive and constructive and substantive response", which could provide "the foundations for meaningful discussions" due to the "emerging common ground" on issues such as housing, healthcare, the green new deal and a social contract.
Labour's parliamentary party is to submit a series of questions to Fianna Fáil and Fine Gael about their joint policy document.
The document was considered by the party's TDs and Senators during a tele-conference this morning.
It is understood Labour will now compile a number of questions about the two parties' policies, and then respond formally to Mr Martin and Mr Varadkar next week.
The Social Democrats are expected to hold a parliamentary party meeting today.
However, it is not expected that a formal response to the Fianna Fáil and Fine Gael joint paper will be forthcoming.
The party said it was still awaiting a "comprehensive reply" to "very specific questions" to Minister for Finance Paschal Donohoe, and the two party leaders, regarding the State's finances.
The three Independent blocks in the Dáil, the Regional Independents, the Rural Independents, and the Independents, all expressed concern last night at the Green Party document.