Analysis of "A Time to Talk" by Robert Frost

I feel this is a straight forward poem by Frost even from the title, "A Time to Talk."  The poem focuses on why it's a good time to talk from a "friendly visit" instead of whatever needs to go on in life: responsibilities and burdens.

However, this poem seems the most Frost on topic, but the least on form and structure.  Unlike his other other poems "The Road Not Taken" or Acquainted with the Night, this poem seems free of consistent rhymes and meter, but I think that's for the advantage of the subject of the poem.

The poem starts with the situation, "When a friend calls to me from the road / And slows his horse to a meaning walk, " in which the speaker has to respond.  But the poem turns into a definition of what not to do, "I don't stand still and look around / On all the hills I haven't hoed," The speakers pushes away thoughts of obligation they need to continue with.

Furthermore, the speaker then pushes away the idea of clarification, "And shout from where I am, What is it? / No, not as there is a time to talk."  The line, "No, not as there is a time to talk" gels two different ideas together -- when is it a good time to talk?  When is it not a good time to talk?  What are those qualifying factors for a simple transaction?

I thrust my hoe in the mellow ground,
Blade-end up and five feet tall,
And plod: I go up to the stone wall
For a friendly visit.

I keep in mind the adjective of "mellow" as a turn in tone in the poem.  Also the detail of how the hoe is placed -- blade-end up as though to retire from service.  This also reminds me of the poem, "Man with a Hoe"  from Edwin Markham.  But that's if I wanted to read the poem in a Marxist way.

But no, simplicity.  How there's a rhyme scheme with "tall" and "wall" to focus on the fact that there is a barrier, but of no significance for a "friendly visit."  What use is form, structure, meaning in just a simple hello?